Nilsson, A. N., Kholin, S. K., & Minakawa, N. (1999). The diving beetles of Kamchatka, with additional records from Sakhalin and the Kuril Islands (Coleoptera: Dytiscidae). Beiträge Zur Entomologie = Contributions to Entomology, 49(1), 107–131. https://doi.org/10.21248/contrib.entomol.49.1.107-131