Taxon - Odkazy a literatura
The Interim Register of Marine and Nonmarine Genera [1164782]
Rees, T. (compiler): The Interim Register of Marine and Nonmarine Genera [https://www.irmng.org] [jako Nelgakia Egorova & Pegel, 1979]
Datum citace: 23. leden 2020
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 Nelgakia PEGEL in EGOROVA & PEGEL, 1979]Datum citace: 11. říjen 2011