Pérez A., N., Ibrahim, M., Villanueva, C., Skarpe, C., & Guerin, H. (2019). Use of tropical forage diversity in paired combinations of woody plants as an indicator of preference for inclusion in the design of silvopastoral systems in dry zones. ‎‎Corporación colombiana de investigación agropecuaria - AGROSAVIA.

Pérez A., Nelson, Muhammad Ibrahim, Cristóbal Villanueva, Christina Skarpe, and Hubert Guerin. Use of Tropical Forage Diversity in Paired Combinations of Woody Plants As an Indicator of Preference for Inclusion in the Design of Silvopastoral Systems in Dry Zones. ‎‎Corporación colombiana de investigación agropecuaria - AGROSAVIA, 2019.

Pérez A., Nelson, et al. Use of Tropical Forage Diversity in Paired Combinations of Woody Plants As an Indicator of Preference for Inclusion in the Design of Silvopastoral Systems in Dry Zones. ‎‎Corporación colombiana de investigación agropecuaria - AGROSAVIA, 2019.