Fiallos-Ortega, L., L. Flores-Mancheno, N. Duchi-Duchi, C. Flores-Mancheno, D. Baño-Ayala, and L. Estrada-Orozco. “Soil Ecological Restoration Applying Biochar (charcoal) and Its Effects on the Medicago Sativa Production”. Ciencia Y Agricultura, Vol. 12, no. 2, July 2015, pp. 13-20, doi:10.19053/01228420.4349.