Benedek, P., T. Szabó, M. Soltész, Z. Szabó, and C. Konrád-Németh. 2010. “Susceptibility of European Pear Genotypes in a Gene Bank to Pear Psylla Damage and Possible Exploitation of Resistant Varieties in Organic Farming”. International Journal of Horticultural Science 16 (3): 95-101. https://doi.org/10.31421/IJHS/16/3/904.