López-Rocha, Enrique, Ana Mireles-Arriga, Jesús Hernández-Ruíz, Jorge Ruiz-Nieto, and Armado Rucoba-Garcia. 2018. “Potential Areas for Sunflower Cultivation under Rainfed Conditions in Guanajuato, Mexico”. Agronomía Mesoamericana 29 (2), 305-14. https://doi.org/10.15517/ma.v29i2.29771.