Panina, E.G., Stepanov, V.G., Smirnov, A.V. and Martynov, A.V. 2020.

Two new species of holothurians of the genus Echinopsolus Gutt, 1990
(Echinodermata: Dendrochirotida: Cucumariidae) from the North-Western Pacific

. Zootaxa. 4789, 1 (Jun. 2020), 233–246. DOI:https://doi.org/10.11646/zootaxa.4789.1.8.