Verduzco-Heredia, M. Á. “Influence of Temperature, Humidity and Tillage in the Coal Organic Soil Semi-Arid Agricultural Subtropical”. Revista Latinoamericana De Recursos Naturales, Vol. 4, no. 2, July 2008, pp. 229-38, https://revista.itson.edu.mx/index.php/rlrn/article/view/129.