Taxon - Odkazy a literatura
Paleobiology Database [19322]
Paleobiology Database [https://paleobiodb.org/] [jako Svenax Opik, 1979]
Datum citace: 11. prosinec 2015
The Interim Register of Marine and Nonmarine Genera [1056417]
Rees, T. (compiler): The Interim Register of Marine and Nonmarine Genera [https://www.irmng.org] [jako Svenax Öpik, 1979]
Datum citace: 30. listopad 2019
Jell P. A., Adrain J. M. (2002): Available generic names for trilobites, Memoirs of the Queensland Museum 48(2): 331-553. Brisbane. ISSN0079-8835. [jako Svenax ÖPIK, 1979]Datum citace: 11. říjen 2011