1. Amaoka, K., Nakaya, K., and Yabe, M., Fishes of Usujiri and adjacent waters in southern Hokkaido, Japan, Bull. Fac. Fish. Hokkaido Univ., 1989, vol. 40, no. 4, pp. 254–277.
2. Amaoka, K., Nakaya, K., and Yabe, M., The Fishes of Northern Japan, Sapporo: Kita-Nihon Kaijo Center, 1995.
3. Amaoka, K., Nakaya, K., and Yabe M., Fishes of Hokkaido. Sapporo: The Hokkaido Shimbun Press, 2011
4. Antonenko, D.V., Pushchina, O.I., and Solomatov, S.F., Distribution and some biological features of skate Bathyraja parmifera (Rajidae, Rajiformes) in the northwestern part of the Sea of Japan, J. Ichthyol., 2007, vol. 47, no. 4, pp. 279–287.
5. Antonenko, D.V., Solomatov, S.F., Balanov, A.A., et al., Occurrence of skate Raja pulchra (Rajidae, Rajiformes) in Russian waters of the Sea of Japan, J. Ichthyol., 2011, vol. 51, no. 6, pp. 426–431.