Bodnár, D. et al. 2019. Examination of the plum psyllid (Cacopsylla pruni Scopoli), a vector of European Stone Fruit Yellows (ESFY) phytoplasma in the countryside of Boldogkőváralja (Hungary). Acta Agraria Debreceniensis. 71 (Feb. 2019), 5–11. DOI:https://doi.org/10.34101/actaagrar/71/1560.