R. Delgado Martínez, J. A. S. Escalante Estrada, E. J. Morales Rosales, J. A. López Santillan, and M. Rocandio Rodríguez, “Snap bean (Phaseolus vulgaris L.) production and profitability intercropping with maize in function of density and nitrogen in template climate”, Rev. FCA UNCUYO, vol. 47, no. 2, pp. 15–25, Dec. 2015.