Novák, Adrienn, András Szabó, and Péter Pepó. 2012. “The Response of Sunflower Hybrids to Different Plant Densities on a Chernozem Soil”. Acta Agraria Debreceniensis, no. 48 (July): 123-28. https://doi.org/10.34101/actaagrar/48/2466.