Szabó, András, and Péter Pepó. “Test of the Plant Density Reaction of Genotype Sunflower Hybrids”. Acta Agraria Debreceniensis, no. 16 (December 6, 2005): 113–119. Accessed November 21, 2024. https://ojs.lib.unideb.hu/actaagrar/article/view/3298.