Chumak, P., Palagecha, R., & Kovalchuk, V. 2012 Apr 1. Variability of the cleistothecia and distribution of Erysiphe magnifica (U. Braun) U. Braun & S. Takam. on Magnolia L. plants in O.V. Fomin Botanical garden. Modern Phytomorphology. [Online] 2: