2011

• Ploeg, J., van der & Cauilan-Cureg, M. & Weerd, M., van & Persoon, G.A. (2011)
  'Why must we protect crocodiles?' Explaining the value of the Philippine crocodile to rural communities. Journal of Integrative Environmental Sciences, 8 (4), pp. 1-12.
  (Article)
• Ploeg, J., van der & Weerd, M., van & Persoon, G.A. (2011)
  A cultural history of crocodiles in the Philippines: Towards a new peace pact? Environment and History, 17 (2), pp. 229-264.
  (Article)
• Ploeg, J., van der & Cauilan-Cureg, M. & Weerd, M., van & Groot, W.T., de (2011)
  Assessing the effectiveness of environmental education: mobilizing public support for Philippine crocodile conservation. Conservation Letters, 4 (4), pp. 313-323.
  (Article)
• Villanueva, L & Ploeg, J., van der & Weerd, M., van (2011)
  Drepanosticta hamalaineni spec. nov and Sulcosticta sierramadrensis spec. nov from the Northern Sierra Madre Natural Park, Luzon, the Philippines (Zygoptera: Platystictidae). Odonatologica, 40 (4), pp. 333-338.
  (Article)
• Ploeg, J., van der & Weerd, M., van & Masipiquena, A.B. & Persoon, G.A. (2011)
  Illegal logging in the Northern Sierra Madre Natural Park, the Philippines. Conservation & Society, 9 (3), pp. 202-215.
  (Article)
• Weerd, M., van & Aquino, D.M. & Masipiqueña, M.D. & Persoon, G.A. (Eds.) (2011)
  International course on water and water management in the Philippines. Leiden: Leiden University and Isabela State University.
  (Book editorial)
• Ploeg, J., van der & Arano, R. & Weerd, M., van (2011)
  What local people think about crocodiles: Challenging environmental policy narratives in the Philippines. The Journal of Environment & Development, 20 (3), pp. 303-328.
  (Article)

2010

• Welton, L.J. & Siler, C.D. & Bennett, D. & Diesmos, A. & Duya, M.R. & Dugay, R. & Rico, E.L.B. & Weerd, M., van & Brown, R.M. (2010)
  A spectacular new Philippine monitor lizard reveals a hidden biogeographic boundary and a novel flagship species for conservation. Biology Letters, 6, pp. 654-658.
  (Article)
• Ploeg, J., van der & Weerd, M., van (2010)
  Agta bird names: an ethno-ornithological survey in the Northern Sierra Madre Natural Park, Philippines. Forktail, 26, pp. 127-131.
  (Article)
• Weerd, M., van & Udo de Haes, H.A. (2010)
  Cross-taxon congruence in tree, bird and bat species distributions at a moderate spatial scale across four tropical forest types in the Philippines. Biodiversity Conservation, 19 (12), pp. 3393-3411.
  (Article)
• Weerd, M., van (2010)
  Philippine Crocodile Crocodylus mindorensis. In: Manolis, S.C. & Stevenson, C. (Eds.), Crocodiles. Status Survey and Conservation Action Plan. Third edition, pp. 71-78. Darwin: IUCN SSC Crocodile Specialist Group.
  (Part of book or chapter of book)
• Weerd, M., van & Buij, R. & Scholte, P.T. & Batakok, E. & Tarla, F.N. (2010)
  Rehabilitation of the Waza-Logone floodplain and its impact on birdpopulations (chapter 13). In: Iongh, H.H. de, Persoon, G.A., Buij, R., Mvondo, J.P., Croes, B.M., Tumenta, P.N. (Eds.), Savannah Landscapes of the Future, celebrating 20 years of Environmental Research and Education in Northern Cameroon, pp. 115-120. Leiden: Center for Environment and Development studies in Cameroon.
  (Part of book or chapter of book)
• Weerd, M., van & Guerrero, J. & Balbas, M.G. & Telan, S. & Ven, W., van de & Rodriquez, D. & Masipiqueña, A.B. & Ploeg, J., van der & Antolin, R. & Rebong, G. & Iongh, H.H., de (2010)
  Reintroduction of captive-bred Philippine crocodiles. Oryx, 44 (1), p. 13.
  (Article)

2009

• Cauilan-Cureg, M. & Balbas, M.G. & Ploeg, J., van der & Weerd, M., van (2009)
  An update of the Philippine crocodile communication, education and public awareness campaign in the Northern Sierra Madre. In Masipiqueña, A.B., Weerd, M., van, Udto, R.G. (Eds.) Changing Landscapes. Proceedings of the sixth international conference on environment and development. (pp. 293-317). Manilla: CVPED.
  (Article in monograph or in proceedings)
• Weerd, M., van & Araño, R.R. (2009)
  A biodiversity hotspot. In: Persoon, G.A., Masipiqueña, A.B., Ploeg, J., van der, Masipiqueña, M.D., Weerd, M., van (Eds.), Crossing Boundaries: celebrating 20 years of environmental research in Cagayan Valley and Sierra Madre, pp. 137-147. Cabagan: CVPED.
  (Part of book or chapter of book)
• Weerd, M., van & Snelder, D.J.R.M. & Spijkerman, L. & Masipiqueña, A.B. (2009)
  A bird's eye view of Northeast Luzon. In: Persoon, G.A, Masipiqueña, A.B., Ploeg, J., van der, Masipiqueña, M.D., Weerd, M., van (Eds.), Crossing Boundaries: celebrating 20 years of environmental research in Cagayan Valley and Sierra Madre, pp. 41-51. Cabagan: CVPED.
  (Part of book or chapter of book)
• Masipiqueña, A.B. & Weerd, M., van & Udto, R.G. (Eds.) (2009)
  Changing Landscapes. Proceedings of the sixth international conference on environment and development. Manilla: CVPED.
  (Book editorial)
• Persoon, G.A. & Masipiqueña, A.B. & Ploeg, J., van der & Masipiqueña, M.D. & Weerd, M., van (Eds.) (2009)
  Crossing Boundaries: celebrating 20 years of environmental research in Cagayan Valley and Sierra Madre. Manila: CVPED.
  (Book editorial)
• Ploeg, J., van der & Balbas, M.G. & Weerd, M., van (2009)
  Do crocodiles have rabies? Initiating a dialogue on in-situ crocodile conservation. Crocodile Specialist Group Newsletter, 28 (3), pp. 8-10.
  (Article)
• Ven, A.C., van de & Guerrero, J.P. & Rodriguez, D.G. & Telan, S.P. & Balbas, M.G. & Tarun, B.A. & Weerd, M., van & Ploeg, J., van der & Wijtten, Z. & Lindeyer, F.E. & Iongh, H.H., de (2009)
  Effectiveness of head starting to bolster Philippine crocodile Crocodylus mindorensis. Conservation Evidence, 6 (4), pp. 111-116.
  (Article)
• Ploeg, J., van der & Rodriguez, D. & Masipiqueña, A.B. & Ven, W., van de & Guerrero, J. & Iongh, H.H., de & Telan, S. & Gatan-Balbas, M. & Boven, G., van & Tarun, B. & Cauilan-Cureg, M. & Weerd, M., van (2009)
  Hope for the Philippine Crocodile. In: Persoon, G.A., Masipiquena, A.B., Ploeg, J., van der, Masipiquena, M.D., Weerd, M., van (Eds.), Crossing Boundaries: celebrating 20 years of environmental research in Cagayan Valley and Sierra Madre, pp. 169-179. Manila: CVPED.
  (Part of book or chapter of book)
• Ploeg, J., van der & Arano, R. & Top, G.M., van den & Masipiqueña, A.B. & Weerd, M., van & Macadangdang, A. (2009)
  Logging the last forest. In: Persoon, G.A., Masipiqueña, A.B., Ploeg, J., van der, Masipiqueña, M.D., Weerd, M., van (Eds.), Crossing Boundaries: celebrating 20 years of environmental research in Cagayan Valley and Sierra Madre, pp. 85-95. Manila: CVPED.
  (Part of book or chapter of book)
• Lavieren, H., van & Iongh, H.H., de & Belen, A. & Weerd, M., van (2009)
  Managing coastal Resources. In: Persoon, G., Ploeg, J., van der, Masipiquena, A., Weerd, M., van (Eds.), Crossing Boundaries, pp. 159-167. Manila: Studieo Graphics Corporation.
  (Part of book or chapter of book)
• Admiraal, J. & Weerd, M., van & Cauilan-Cureg, M. & Ploeg, J., van der & Balbas, M.G. (2009)
  Manual on Philippine crocodile conservation. Manilla: Mabuwaya Foundation Inc..
  (Book (monograph))
• Ploeg, J., van der & Weerd, M., van (2009)
  Northern Sierra Madre Natural Park: van prioriteit naar vergetelheid. Ecologie & Ontwikkeling, 17 (78), pp. 34-36.
  (Article)
• Cauilan-Cureg, M. & Ploeg, J., van der & Weerd, M., van & Udto, R.G. & Balbas, M.G. (2009)
  Philippine crocodile, something to be proud of. Manilla: Mabuwaya Foundation Inc..
  (Book (monograph))
• Weerd, M., van & Balbas, M.G. (2009)
  Report support mission Mabuwaya Foundation to Wahana Bumi Hijau (WBH) in South Sumatra, Indonesia regarding the project: "protection of the Senyulong crocodile habitat in the Merang-Kepayang peat swamp forest". Cabagan: Mabuwaya Foundation Inc..
  (External research report)
• Persoon, G.A. & Masipiqueña, A.B. & Ploeg, J., van der & Masipiqueña, M.D. & Weerd, M., van (2009)
  Research themes, projects and education. In: Persoon, G.A., Masipiqueña, A.B., Ploeg, J., van der, Masipiqueña, M.D., Weerd, M., van (Eds.), Crossing Boundaries: celebrating 20 years of environmental research in Cagayan Valley and Sierra Madre, pp. 19-39. Manila: CVPED.
  (Part of book or chapter of book)
• Villanueva, R.J. & Ploeg, J., van der & Weerd, M., van (2009)
  Some Odonata from the Northern Sierra Madre Natural Park, Isabela, Luzon, Philippines. Agrion, 13 (2), pp. 72-74.
  (Article)
• Weerd, M., van & Balbas, M.G. (2009)
  Strengthening community-based wetland conservation in Cagayan Valley. Cabagan: Mabuwaya Foundation Inc..
  (External research report)
• Arano, R. & Weerd, M., van & Ploeg, J., van der (2009)
  The Northern Sierra Madre Natural Park. In: Persoon, G.A., Masipiqueña, A.B., Ploeg, J., van der, Masipiqueña, M.D., Weerd, M., van (Eds.), Crossing Boundaries: celebrating 20 years of environmental research in Cagayan Valley and Sierra Madre, pp. 149-157. Manila: CVPED.
  (Part of book or chapter of book)
• Persoon, G.A. & Weerd, M., van & Aquino, D.M. & Minter, T. (2009)
  Value from the forest. In: Persoon, G.A., Masipiqueña, A.B., Ploeg, J., van der, Masipiqueña, A.B., Weerd, M., van (Eds.), Crossing Boundaries: celebrating 20 years of environmental research in Cagayan Valley and Sierra Madre, pp. 107-115. Manila: CVPED.
  (Part of book or chapter of book)

2008

• Ploeg, J., van der & Weerd, M., van (2008)
  Creating space for crocodiles: environmental governance in the Philippines. In: Santen, J., van (Ed.), Development in Place: Perspectives and Challenges, pp. 214-246. Amsterdam: Askant.
  (Part of book or chapter of book)
• Ploeg, J., van der & Weerd, M., van (2008)
  Crocodile rehabilitation, observance and conservation (CROC) project: the conservation of the critically endangered Philippine crocodile (Crocodylus mindorensis) in Northeast Luzon, the Philippines. Cabagan: Mabuwaya Foundation.
  (External research report)
• Weerd, M., van & Snelder, D.J.R.M. (2008)
  Human-altered tree-based habitats and their value in conserving bird and bat diversity in Northeast Luzon, the Philippines. In: Snelder, D.J.R.M/ & Lasco, R.D. (Eds.), Smallholder tree growing for rural development and environmental services (Advances in Agroforestry), 5. , pp. 347-378. Gainesville: Springer.
  (Part of book or chapter of book)
• Ploeg, J., van der & Weerd, M., van (2008)
  Mens over dier: Operatie 'Free Isabela'. Ecologie en Ontwikkeling, 16 (75), pp. 70.
  (Article)
• Ploeg, J., van der & Cureg, M.C. & Weerd, M., van (2008)
  Mobilizing public support for in-situ conservation of the Philippine crocodile in the Northern Sierra Madre: something to be proud of! National Museum Papers, 13 (1-4), pp. 68-94.
  (Article)
• Weerd, M., van & Ploeg, J., van der (2008)
  Philippine crocodile hatchling head-start and re-enforcement program in San Mariano, Isabela Province, Luzon, the Philippines. In: Soorae, P.S. (Ed.), Global re-introduction perspectives: re-introduction case-studies from around the globe, pp. 79-83. Abu Dhabi: IUCN/SCC Re-introduction Specialist Group.
  (Part of book or chapter of book)
• Villamor, G.B. & Ambal, R.G. & Boffa, J.-M. & Brookes, T. & Cereno, A. & Coroza, O. & Lasco, R.D. & Schroth, G. & Weerd, M., van (2008)
  Setting landscape conservation targets and promoting them through compatible land use in the Philippines. Bogor, Indonesia: World Agroforestry Centre.
  (External research report)
• Iongh, H.H., de & Weerd, M., van (2008)
  The use of avian guilds for monitoring Borneo lowland forests: methodology development for rapid assessment of avian communities. In: Persoon, G.A. & Osseweijer, M. (Eds.), Reflections on the Heart of Borneo (Tropenbos Series), 24. , pp. 49-68. Wageningen: Tropenbos International.
  (Part of book or chapter of book)

2007

• Ploeg, J., van der & Weerd, M., van (2007)
  A re-enforcement strategy for the critically endangered Philippine crocodile population in the Northern Sierra Madre: pilot project. Cabagan: Mabuwaya Foundation.
  (External research report)
• Ploeg, J., van der & Weerd, M., van & Telan, S. (2007)
  Cross visit to Liguasan marsh. Crocodile Specialist Group Newsletter, 26 (4), pp. 11.
  (Article)
• Iongh, H.H., de & Weerd, M., van & Pieters, S. & Wielstra, B. (2007)
  Results of research on the use of Avian guilds for monitoring Bornean lowland forests. In Iongh, H.H., de, Persoon, G.A., Kustiawan, W. (Eds.) Options for biodiversity conservation and sustainable use in lowland forests of Southeast Borneo (pp. 171-196). Leiden: Tropenbos/CML/UNMUL.
  (Article in monograph or in proceedings)

2006

• Ploeg, J., van der & Weerd, M., van (2006)
  A paradigm shift in Philippine crocodile conservation. Crocodiles. Proceedings of the 18th working meeting of the Crocodile Specialist Group (pp. 165-186). Gland/Cambridge: IUCN.
  (Article in monograph or in proceedings)
• Persoon, G.A. & Weerd, M., van (2006)
  Biodiversity and natural resource management in insular Southeast Asia. Islands Studies Journal, 1 (1), pp. 81-108.
  (Article)
• Oliveros, C. & Telan, S. & Weerd, M., van (2006)
  Crocodile surveys on Dalupiri and Fuga. Manila: Isla Biodiversity Inc. and Mabuwaya Foundation Inc..
  (External research report)
• Ploeg, J., van der & Weerd, M., van (2006)
  Crocodiles in the mist. In Persoon, G.A., Barendse, G.W.J., Bezemer, H. (Eds.) Sporen van een gedreven pionier (pp. 71-81). Leiden: CML.
  (Article in monograph or in proceedings)
• Ploeg, J., van der & Weerd, M., van (2006)
  Enlarged scales: strengthening Philippine crocodile conservation in the Sierra Madre corridor. Leiden: CML Department of Environment and Development (oud --> CML-CB).
  (External research report)
• Weerd, M., van & Ploeg, J., van der & Rodriguez, D. & Guerrero, J. & Tarun, B. & Telan, S. & Jonge, J., de (2006)
  Philippine crocodile conservation in Northeast Luzon: an update of population status and new insights into Crocodylusmindorensis ecology. In IUCN/SCC, (Ed.) Proceedings of the 18th Working Meeting of the Crocodile Specialist Group (pp. 305-320). Montélimar
  (Article in monograph or in proceedings)
• Weerd, M., van & Ploeg, J., van der (2006)
  Report on the community-based crocodilian conservation workshop of the IUCN/SSC meeting 2006. Crocodiles. Proceedings of the 18th working meeting of the Crocodile Specialist Group (pp. 392-402). Gland/Cambridge: IUCN.
  (Article in monograph or in proceedings)
• Iongh, H.H., de & Weerd, M., van (2006)
  The use of avian guilds for the monitoring of tropical forest disturbance by logging. Wageningen: Tropenbos International.
  (Book (monograph))
• Weerd, M., van & Ploeg, J., van der (2006)
  Towards an ecosystem approach for the conservation of the Philippine crocodile. Final technical report to IUCN Small Grants Programme. Cabagan: Mabuwaya Foundation.
  (External research report)

2005

• Weerd, M., van (2005)
  Monitoring program Crocodile Rehabilitation, Observance and Conservation (CROC) Project. In DENR-PAWB, , CI, , Haribon Foundation, , FPE, (Eds.) Proceedings of the national biodiversity monitoring workshop (pp. 1-11). Manila: DENR-PAWB, CI, Haribon Foundation and FPE.
  (Article in monograph or in proceedings)
• Iongh, H.H., de & Weerd, M., van (2005)
  A pantropical review of the impact of logging on avian guilds, and avian guild composition in three rainforest sites including the Northern Sierra Madre Natural Park, Philippines. Sylvatrop, 15 (1-2), pp. 65-86.
  (Article)
• Ploeg, J., van der & Weerd, M., van (2005)
  Contested crocodiles? Philippine crocodile conservation and indigenous peoples' rights in the Northern Sierra Madre. In: Ploeg, J., van der & Masipiquena, A.B. (Eds.), The future of the Sierra Madre; responding to social and ecological changes, pp. 339-362. Cabagan: Golden Press.
  (Part of book or chapter of book)
• Weerd, M., van & Ploeg, J., van der (2005)
  Continued Philippine crocodile conservation action in Northeast Luzon. Crocodile Specialist Group Newsletter, 24 (3), pp. 12-14.
  (Article)
• Ploeg, J., van der & Weerd, M., van (2005)
  Crocodile, Rehabilitation, Observance and Conservation (CROC) project. Cabagan: CVPED.
  (External research report)
• Weerd, M., van & Ploeg, J., van der (2005)
  Ecosysteembenadering voor de bescherming van de Filippijnse krokodil. Ecologie & Ontwikkeling, 69, pp. 40-42.
  (Article)
• Oliveros, C. & Manalo, R. & Coñate Sr., E. & Tarun, B. & Telan, S. & Weerd, M., van (2005)
  Philippine crocodile recorded on Dalupiri island. Crocodile Specialist Group Newsletter, 24 (3), pp. 14-15.
  (Article)
• Ploeg, J., van der & Weerd, M., van (2005)
  The environment is not a crocodile: adopting an ecosystem approach for Philippine crocodile conservation in the municipality of San Mariano. Cabagan: CVPED.
  (External research report)

2004

• Weerd, M., van & Ploeg, J., van der (2004)
  A new future for the Philippine crocodile. Sylvatrop, 13 (1&2), pp. 31-50.
  (Article)
• Persoon, G.A. & Weerd, M., van (2004)
  Biodiversity and resource management in Southeast Asian Islands. In Lee, K.J. & Tsai, H-M (Eds.) Islands of the World VIII: Changing Islands, Changing Worlds (pp. 65-97). Taipeh: National University Taiwan.
  (Article in monograph or in proceedings)
• Weerd, M., van & Ploeg, J., van der (2004)
  Conservation of the Phillipine crocodile Crocodylus mindorensis in North East Luzon, the Philippines. An update. In Crocodile Specialist Group, The (Ed.) Crocodile, Proceedings of the 17th working meeting of the Crocodile Specialist Group (pp. 277-283). Gland, Switzerland: IUCN.
  (Article in monograph or in proceedings)
• Weerd, M., van & Ploeg, J., van der (2004)
  Crocodile conservation action plan for the Northern Sierra Madre Natural Park. Cabagan: CVPED.
  (External research report)
• Ploeg, J., van der & Weerd, M., van (2004)
  Devolution of natural resource management and Philippine crocodile conservation in San Mariano, Isabela. Philippine Studies, 52 (3), pp. 346-383.
  (Article)
• Miranda, J.S.Q & Weerd, M., van & Ploeg, J., van der (2004)
  Devolving crocodile conservation to the local level, the case of Philippine crocodile conservation in the municipality of San Mariano, Northeast Luzon, the Philippines. In Crocodile Specialist Group, The (Ed.) Crocodiles. Proceedings of the 17th working meeting of the Crocodile Specialist Group (pp. 309-316). Gland, Switzerland: IUCN.
  (Article in monograph or in proceedings)
• Weerd, M., van (2004)
  Het monster van de Sierra Madre. Kijk, 4, pp. 62-64.
  (Article)
• Weerd, M., van & Hutchinson, R. (2004)
  Observations of Isabela Oriole Oriolus isabellae in the Sierra Madre, Luzon, the Philippines, with descriptions of the call. Forktail, 20, pp. 133-136.
  (Article)
• Weerd, M., van & Ploeg, J., van der (2004)
  Surveys of wetlands and waterbirds in Cagayan Valley, Northern Luzon, Philippines. Forktail, 20, pp. 33-39.
  (Article)
• Weerd, M., van (2004)
  T.R. - Agham Mindanao. Agham Mindanao
  (Contribution for newspaper or weekly magazine)
• Tarun, B. & Guerrero, D. & Rodriguez, S. & Telan, M. & Weerd, M., van & Ploeg, J., van der (2004)
  The current distribution and population size of the Philippine crocodile and Estuarine crocodile in Northeast Luzon, the Philippines. In Crocodile Specialist Group, The (Ed.) Crocodiles, Proceedings of the 17th working meeting of the Crocodile Specialist Group (pp. 166-173). Gland, Switzerland: IUCN.
  (Article in monograph or in proceedings)
• Weerd, M., van & Strijk, J. & Snelder, D.J.R.M. (2004)
  The importance of forest fragments for biodiversity conservation and local communities in Northeast Luzon, Philippines. Sylvatrop, 13 (1&2), pp. 1-30.
  (Article)
• Iongh, H.H., de & Weerd, M., van (2004)
  The use of avian guilds for monitoring responses to human intervention in tropical forests of the Philippines. Pilipinas: a Journal of Philippine Studies, 43, pp. 92-104.
  (Article)
• Weerd, M., van & Boven, G., van & Ploeg, J., van der (2004)
  Using communication to involve local communities and local governments in protected area management: two related cases from Northeastern Luzon, Philippines. In: Hamu, D. & Auchincloss, E. (Eds.), Communicating protected areas, pp. 139-154. Gland, Switzerland and Cambridge, UK: IUCN / Commission on Education and Communication.
  (Part of book or chapter of book)

2003

• Weerd, M., van & Guerrero, J.P. & Tarun, B.A. & Rodriguez, D.G. (2003)
  Coastal birds of the Northern Sierra Madre Natural Park. In Ploeg, J., van der, Masipiquena, A.B., Bernardo, E.C. (Eds.) The Sierra Madre Mountain Range: Global Relevance, Local Realities (pp. 63-74). Tuguegarao City: Golden Press.
  (Article in monograph or in proceedings)
• Weerd, M., van & Ploeg, J., van der (2003)
  Community-based Research, Observance and Conservation (CROC): a research project aimed at contributing to the conservation of the Philippine crocodile (Crocodylus mindorensis) in Northeast Luzon, the Philippines. Cabagan: CVPED.
  (External research report)
• Weerd, M., van & General, A.A.G. (2003)
  Conserving the Philippine crocodile in the Northern Sierra Madre: the results of three years research and conservation in action. In Ploeg, J., van der, Masipiquena, A.B., Bernardo, E.C. (Eds.) The Sierra Madre Mountain Range: Global Relevance, Local Realities (pp. 17-33). Tuguegarao City: Golden Press.
  (Article in monograph or in proceedings)
• Weerd, M., van & Guerrero, J.P. & Tarun, B.A. & Rodriguez, D.G. (2003)
  Flying foxes of Northern Sierra Madre Natural Park. In Ploeg, J., van der, Masipiquena, A.B., Bernardo, E.C. (Eds.) The Sierra Madre Mountain Range: Global Relevance, Local Realities (pp. 54-62). Tuguegarao City: Golden Press.
  (Article in monograph or in proceedings)
• Ploeg, J., van der & Weerd, M., van (2003)
  Last stronghold of the Philippine Crocodile. Haring Ibon, 1st quarte, pp. 31-34.
  (Article)
• Weerd, M., van (2003)
  Mens en Krokodil leven samen op de Filippijnen. Ecologie en Ontwikkeling, 11 (2/3), pp. 15-17.
  (Article)
• Weerd, M., van & Ploeg, J., van der (2003)
  Philippines. Crocodile Specialist Group Newsletter, 22 (1), pp. 8-11.
  (Article)

2002

• Weerd, M., van (2002)
  The status and conservation of the Philippine crocodile Crocodylus mindorensis in the Northern Sierra Madre, Luzon, the Philippines. In Crocodile Specialist Group, The (Ed.) Crocodiles. Proceedings of the 16th working meeting of the Crocodile Specialist Group (pp. 97-107). Gland, Switzerland and Cambridge, UK: IUCN.
  (Article in monograph or in proceedings)