Alegre, J., C. Lao, C. Silva, and E. Schrevens. 2017. “Recovering Degraded Lands in the Peruvian Amazon by Cover Crops and Sustainable Agroforestry Systems”. Peruvian Journal of Agronomy 1 (1): 1-7. https://doi.org/10.21704/pja.v1i1.1005.