Gutiérrez Soto, M. V. “Edgar Vargas Gonzalez; The Man, the Scientist and Agro-Ecologist. After Ten Years of His Death (January 21, 1939 - May 3, 2007)”. Agronomía Mesoamericana, vol. 28, no. 2, Apr. 2017, doi:10.15517/ma.v28i2.28536.