Kása, K., M. Hevesi, M. G. Tóth, and É. Stefanovits-Bányai. 2004. “Effect of Erwinia Amylovora Infection on Peroxidase Enzyme Activity in Resistant Apple Cultivars”. International Journal of Horticultural Science 10 (3):37-39. https://doi.org/10.31421/IJHS/10/3/503.