Knoke, T. M., M. Weber, J. Barkmann, P. Pohl, B. Calvas, C. Medina, N. Aguirre, S. Günter, B. Stimm, R. Mosandl, F. von Walter, B. Maza, and A. Gerique. “Effectiveness and Distributional Impacts of Payments for Reduced Carbon Emissions from Deforestation”. ERDKUNDE, vol. 63, no. 4, Dec. 2009, pp. 365-84, doi:10.3112/erdkunde.2009.04.06.