De Grazia, J., P.A. Tittonell, D. Germinara, and A. Chiesa. “Short Communication : Phosphorus and Nitrogen Fertilization in Sweet Corn (Zea Mays L. Var. Saccharata Bailey)”. Spanish Journal of Agricultural Research 1, no. 2 (June 1, 2003): 103-107. Accessed August 1, 2026. https://sjar.revistas.csic.es/index.php/sjar/article/view/28.