Chumak, P., 		Palagecha, R., AND 		Kovalchuk, V..
" 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" <em>Modern Phytomorphology</em> [Online], Volume 2(1 April 2012)