Holb, I. J. “Apple Powdery Mildew Caused by Podosphaera Leucotricha: Some Aspects of Disease Management”. International Journal of Horticultural Science 20, no. 1-2 (April 22, 2014): 29–33. Accessed May 2, 2024. https://ojs.lib.unideb.hu/IJHS/article/view/1113.