1. Amano K 1986. Host range and geographical distribution of the powdery mildew fungi. Tokyo Japan; Japan Scientific Societies Press 741 pp.
2. Braun U 1978. Taxonomic position of mildew on Silene alba (Mill.) E.H.L. Krause. Ceska Mykologie 32(2):79-81
3. Braun U 1987. A monograph of the Erysiphales (powdery mildews). Beihefte zur Nova Hedwigia 89:700 pp.
4. Braun U 1995. The Powdery Mildews (Erysiphales) of Europe. Jena Germany: Gustav Fischer Verlag 337 pp.
5. Braun U Cook RTA Inman AJ Shin HD 2002. The taxonomy of the powdery mildew fungi. The powdery mildews: a comprehensive treatise 13-55; many ref.