1. Boltnev, A.I., Severnyi morskoi kotik Komandorskikh ostrovov (Northern Fur Seal of the Commander Islands), Moscow: Vseross. Nauchno-Issled. Inst. Rybn. Khoz. Okeanogr., 2011.
2. Zhdanova, O.L., Kuzin, A.E., and Frisman, E.Ya., The Survival Dynamics of Male Northern Fur Seals (Callorhinus ursinus) on Tyulenii Island, Sea of Okhotsk, Based on Long-Term Observations, Biol. Bull., 2017, vol. 44, pp. 1174–1191.
3. Zhdanova, O.L., Kuzin, A.E., and Frisman, E.Ya., Estimating the juvenile survival rate of male Northern fur seal (Callorhinus ursinus): mathematical modelling and data analysis, Math. Biol. Bioinf., 2018, vol. 13, no. 2, pp. 360–375. https://doi.org/10.17537/2018.13.360
4. Kornev, S.I., Blokhin, I.A., Generalov, A.A., and Semerinov, A.P., Historical trend of the Commander Islands population of Northern fur seals over 50 years (1958–2007), Issledovaniya vodnykh biologicheskikh resursov Kamchatki i severo-zapadnoi chasti Tikhogo okeana (Studies on Aquatic Biological Resources of Kamchatka and the Northwest Pacific), Petropavlovsk-Kamchatsky: Kamchatskii Nauchno-Issled. Inst. Rybn. Khoz. Okeanogr., 2008, no. 11, pp. 105–120.
5. Kuzin, A.E., Intrapopulation structure of the northern fur seal on Tyuleniy Island during the years of recovery from the depression (1993–2009), Izv. Vses. Nauchno-Issled.
Inst. Rybn. Khoz. Okeanogr., 2010, vol. 161, pp. 53–67.