Benedek, P. “Some Flower Characters, Variety Features and Environmental Effects Affecting Bee Pollination of Pear (Pyrus Communis L.): A Review of the Results of Latest Research”. International Journal of Horticultural Science 6, no. 3 (June 6, 2000): 59–66. Accessed July 6, 2022. https://ojs.lib.unideb.hu/IJHS/article/view/104.