“Effectiveness of Mineral Fertilization on Corn for Grain, Cultivated in Pellic Vertisol, FAO in Southeastern Bulgaria in Favorable and Risky Meteorological Conditions”, BJSSAE, vol. 48, no. 2, pp. 34–42, Jun. 2014, Accessed: Feb. 13, 2026. [Online]. Available: https://agriacad.eu/ojs/index.php/bjssae/article/view/2397