Benedek, P., Nyéki, J., Amtmann, I., Bakcsa, F., Iváncsics, J., Erdős, Z., & Skola, I. (2000). The effect of spring frosts on the nectar production and the bee visitation of fruit trees. International Journal of Horticultural Science, 6(1), 86–89. https://doi.org/10.31421/IJHS/6/1/75