Mayer, D. R. and Kovács, G. (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), pp. 96–98. doi: 10.31421/IJHS/5/1-2/33.