Hevesi, M., J. Papp, E. Jámbor-Benczúr, K. Kaszáné Csizmár, I. Pozsgai, Gy. Gazdag, and I. Balla. “Testing the Virulence of Some Hungarian Erwinia Amylovora Strains on in Vitro Cultured Apple Rootstocks”. International Journal of Horticultural Science 6, no. 4 (August 23, 2000): 52–55. Accessed April 14, 2021. https://ojs.lib.unideb.hu/IJHS/article/view/223.