- 5943/mycosphere/13/1/2. hdl:1854/LU-8754813. Gyelnik, V. (1935). "De
familia Heppiacearum, II".
Feddes Repertorium (in Latin). 38: 307–313. Henssen, Aino (1995)...
- CABI. p. 17. ISBN 978-0-85199-827-5. Gyelnik, V. (1935). "De
familiam Heppiacearum 1,2".
Feddes Repertorium (in German). 38: 153–157 (465–469), 307–313...
- 3390/biology11101518. PMC 9598497. PMID 36290421. Gyelnik, V. (1935). "De
familia Heppiacearum, II".
Feddes Repertorium. 38: 153–157, 307–313. Eriksson, O.; Hawksworth...
- 282–283. 26
April 1967. JSTOR 3240963. Gyelnik, V. (1935). "De
familia Heppiacearum, II" [On the
family Heppiaceae, II].
Feddes Repertorium Specierum Novarum...
