Fiallos-Ortega, L. R., Flores-Mancheno, L. G., Duchi-Duchi, N., Flores-Mancheno, C. I., Baño-Ayala, D. and Estrada-Orozco, L. (2015) “Soil ecological restoration applying biochar (charcoal) and its effects on the Medicago sativa production”, Ciencia y Agricultura, 12(2), pp. 13–20. doi: 10.19053/01228420.4349.