1. The Genus Helvella in Alberta;Abbott;Mycotaxon,1988
2. The Helvellaceae: systematic revision and occurrence in northern and north western North America;Abbott;Mycotaxon,1997
3. Notes on the genus Helvella in Spain;Calonge;Mycotaxon,1990
4. New or interesting British microfungi;Dennis;Kew Bull,1971
5. New or critical fungi from the Highlands and Islands;Dennis;Kew Bull,1980