Nin, S., A. Ferri, P. Sacchetti, and E. Giordani. “Pear Resistance to Psilla (Cacopsylla Pyri L.): A Review”. Advances in Horticultural Science 26, no. 2 (May 10, 2013): 59–74. Accessed March 2, 2026. https://oaj.fupress.net/index.php/ahs/article/view/2976.