Toshiyuki Kimura, Yoshikazu Hasegawa, Naoki Kohno. A New Species of the Genus Eschrichtius (Cetacea: Mysticeti) from the Early Pleistocene of Japan (англ.) // Paleontological Research. — 2018. — Vol. 22, iss. 1. — P. 1–19. — ISSN1880-0068 1342-8144, 1880-0068. — doi:10.2517/2017PR007.
Toshiyuki Kimura, Yoshikazu Hasegawa, Naoki Kohno. A New Species of the Genus Eschrichtius (Cetacea: Mysticeti) from the Early Pleistocene of Japan (англ.) // Paleontological Research. — 2018. — Vol. 22, iss. 1. — P. 1–19. — ISSN1880-0068 1342-8144, 1880-0068. — doi:10.2517/2017PR007.