Van Hecken, Gert, Johan Bastiaensen, and Fredéric Huybrechs. “Towards an Institutional Approach of Payments for Environmental Services: Perspectives on Supply and Demand for Environmental Services from Two Case Studies in the Nicaraguan Agricultural Frontier”. Encuentro, no. 92 (October 11, 2012): 29–52. Accessed July 17, 2024. https://camjol.info/index.php/ENCUENTRO/article/view/784.