Panchenko, V.V. & Pushchina, O.I. & Boiko, M.I. & Kalchugin, P.V. (2017)
Distribution and some biological features of bottom skate Bathyraja bergi in the Russian waters of the Sea of Japan. Journal of Ichthyology, 57(4), 560–568
DOI: 10.1134/S0032945217040105

Antonenko, D.V. & Solomatov, S.V. & Balanov, A.A. & Kim Sen Tok & Kalchugin, P.V. (2011)
Occurrence of skate Raja pulchra (Rajidae, Rajiformes) in Russian waters of the Sea of Japan. Journal of Ichthyology, 51(6), 426–431
DOI: 10.1134/S0032945211040011