1. Grzymala, S., Z. Pilzk.23 (1957) 138, Mykol. MittBl.3 (1958) 1; Rocz. PZH12 (1961) 491; Bull. Soc. Mycol. France78 (1962) 394.
2. Gruber, I., Z. Pilzk.35, (1969) 250.
3. Testa, E., Rassegna micologica ticinese, No 2. Soc. micol. Carlo Benzoni, Chiasso, Switzerland 1970.
4. Gamper, R., Ph.D. Thesis, University of Innsbruck, 1977.
5. Moser, M., Z. Pilzk.37 (1971) 41.