Ladányi, M., Sz. Persely, T. Szabó, Z. Szabó, M. Soltész, and J. Nyéki. “Climatic Indicator Analysis of Blooming Time for Sour Cherries”. International Journal of Horticultural Science 16, no. 1 (January 3, 2010): 11-16. Accessed April 5, 2020. https://ojs.lib.unideb.hu/IJHS/article/view/855.