Nyéki, J., T. Szabó, and Z. Szabó. “Blooming Phenology and Fertility of Sour Cherry Cultivars Selected in Hungary”. International Journal of Horticultural Science 8, no. 2 (August 14, 2002): 33–37. Accessed April 28, 2024. https://ojs.lib.unideb.hu/IJHS/article/view/320.