Novák, Adrienn. “Examining Reaction of Sunflower Genotypes on Planting Time on Chernozem Soil”. Acta Agraria Debreceniensis, no. 56 (March 11, 2014): 93–99. Accessed May 3, 2024. https://ojs.lib.unideb.hu/actaagrar/article/view/1941.