Jaimez, Ramón. “Phenology and Yield of Maize for Different Sowing Dates in a Tropical Mountain Environment”. Revista de la Facultad de Agronomía de la Universidad del Zulia 14, no. 5 (May 29, 2012). Accessed August 1, 2025. https://produccioncientifica.luz.edu.ve/index.php/agronomia/article/view/26151.