Racskó, József. “N-Phenyl-Phthalamic Acid and Fertilization Effects on Flowering, Fruit Set and Fruit Quality of Apple (Malus Domestica Borkh.)”. Acta Agraria Debreceniensis, no. 24 (October 11, 2006): 24–28. Accessed November 24, 2024. https://ojs.lib.unideb.hu/actaagrar/article/view/3220.