Pepó, Péter. “New Results of Nutrient Utilization and Response of Maize (Zea Mays L.) Hybrids”. COLUMELLA – Journal of Agricultural and Environmental Sciences, vol. 1, no. 2, Nov. 2014, pp. 87-93, https://doi.org/10.18380/SZIE.COLUM.2014.1.2.87.