Pepó, Péter, and Eszter Murányi. 2014. “Plant Density Impact on Grain Yield of Maize (Zea Mays L.) Hybrids on Chernozem Soil of the Eastern Hungary”. COLUMELLA – Journal of Agricultural and Environmental Sciences 1 (2): 95-100. https://doi.org/10.18380/SZIE.COLUM.2014.1.2.95.