1. The genus Helvella in Alberta;Abbott;Mycotaxon,1988
2. The Helvellaceae: Systematic revision and occurrence in northern and northwestern North America;Abbott;Mycotaxon,1997
3. Svamp-Slägtet Helvella;Afzelius;Kungliga Svenska Vetenskapsakademiens Handlingar,1783
4. The Fungi. An advanced treatise. IV A. A taxonomic review with keys: Ascomycetes and Fungi Imperfecti;Ainsworth,1973
5. Universal and rapid salt-extraction of high quality genomic DNA for PCR-based techniques;Aljanabi;Nucleic Acids Research,1997