Zsombik, László. “Changes in the Diaporthe Helianthi Infection of Sunflower Hybrids Between 1998 and 2002”. Acta Agraria Debreceniensis, no. 10 (May 11, 2003): 214–233. Accessed April 30, 2024. https://ojs.lib.unideb.hu/actaagrar/article/view/3498.