| Primates of Colombia TR Defler, SD Nash, C Landazábal Mendoza, M Nieto Díaz, ... (No Title), 2004 | 462 | 2004 |
| Riqueza, endemismo y conservación de los mamíferos de Colombia S Solari, Y Muñoz-Saba, JV Rodríguez-Mahecha, TR Defler, ... Mastozoología neotropical 20 (2), 301-365, 2013 | 413 | 2013 |
| Historia natural de los primates colombianos TR Defler Universidad Nacional de Colombia, 2010 | 263 | 2010 |
| Diet of a group ofLagothrix Lagothricha Lagothricha in southeastern Colombia TR Defler, SB Defler International Journal of Primatology 17, 161-190, 1996 | 155 | 1996 |
| The time budget of a group of wild woolly monkeys (Lagothrix lagotricha) TR Defler International Journal of Primatology 16, 107-120, 1995 | 139 | 1995 |
| Censusing primates by transect in a forest of known primate density TR Defler, D Pintor International Journal of Primatology 6, 243-259, 1985 | 129 | 1985 |
| On the ecology and behavior ofCebus albifrons in eastern Colombia: I. Ecology TR Defler Primates 20 (4), 475-490, 1979 | 118 | 1979 |
| Aotus diversity and the species problem TR Defler, ML Bueno Primate Conservation 22 (1), 55-70, 2007 | 101 | 2007 |
| Mamíferos colombianos: sus nombres comunes e indígenas JV Rodríguez-Mahecha, JI Hernández-Camacho, TR Defler, M Alberico, ... Occasional Papers in Conservation Biology, Conservation International 3, 1-56, 1995 | 101 | 1995 |
| Aspects of the ranging pattern in a group of wild woolly monkeys (Lagothrix lagothricha) TR Defler American Journal of Primatology 38 (4), 289-302, 1996 | 90 | 1996 |
| Diet of a Group of Callicebus torquatus lugens (Humboldt, 1812) During the Annual Resource Bottleneck in Amazonian Colombia E Palacios, A Rodríguez, TR Defler International Journal of Primatology 18, 503-522, 1997 | 84 | 1997 |
| Callicebus caquetensis: a new and critically endangered titi monkey from southern Caquetá, Colombia TR Defler, ML Bueno, J García Primate Conservation 2010 (25), 1-9, 2010 | 67 | 2010 |
| The density ofAlouatta seniculus in the eastern llanos of Colombia TR Defler Primates 22 (4), 564-569, 1981 | 67 | 1981 |
| A comparison of intergroup behavior inCebus albifrons andC. apella TR Defler Primates 23, 385-392, 1982 | 53 | 1982 |
| Locomotion and Posture in Lagothrix lagotricha TR Defler Folia Primatologica 70 (6), 313-327, 1999 | 47 | 1999 |
| Conservation of Colombian primates: an analysis of published research PR Stevenson, DC Guzmán, TR Defler Tropical Conservation Science 3 (1), 45-62, 2010 | 46 | 2010 |
| Taxonomic status of Aotus hershkovitzi: its relationship to Aotus lemurinus lemurinus TR Defler, ML Bueno, JI Hernández-Camacho Neotropical Primates 9 (2), 37-52, 2001 | 46 | 2001 |
| Some aspects of the conservation of non-human primates in Colombia J Hernández-Camacho Primate Conserv 6, 42-50, 1985 | 45 | 1985 |
| Conservation priorities for Colombian primates JI Hernández-Camacho Primate conservation 19, 10-18, 2003 | 43 | 2003 |
| On the ecology and behavior ofCebus albifrons in eastern Colombia: II. Behavior TR Defler Primates 20 (4), 491-502, 1979 | 43 | 1979 |
