Escalante-Estrada, J. Alberto. “Nitrogen Agronomic Efficiency in the Use of Water and Radiation in Faba Bean Yield, As Affected by Split Application of Nitrogen”. REVISTA TERRA LATINOAMERICANA, vol. 25, no. 2, July 2009, pp. 145-54, https://terralatinoamericana.org.mx/index.php/terra/article/view/1420.