PASTIRČÁKOVÁ K., IVANOVÁ H., BERNADOVIČOVÁ S. (2008): Neoerysiphe galeopsidis on Stachys species in Slovakia and the Czech Republic based on a re-examination of herbarium collections. Czech Mycology 60(2): 251-264 [published: 27th February, 2009]
ŠEBEK S. (1989): Botaniker Ph. M. Opiz und sein Beitrag zur tschechischen Pilzkunde im XIX. Jahrhundert. Česká Mykologie 43(3): 129-137 [published: 21st August, 1989]