Mayer, D. R., and G. Kovács. 1999. “Toxicity of Fungicides to Honey Bees (Hymenoptera: Apidae) and Their Effects on Bee Foraging Behavior, Pollen Viability and Fruit Set on Blooming Apples and Pears”. International Journal of Horticultural Science 5 (1-2): 96-98. https://doi.org/10.31421/IJHS/5/1-2/33.