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"Limits of Oceans and Seas"(PDF) (3rded.). International Hydrographic Organization. 1953. Archived(PDF) from the original on 8 October 2011. Retrieved 28 December 2020.
Berzin A.; Ivashchenko V.Y.; Clapham J.P.; Brownell L. R.Jr. (2008). "The Truth About Soviet Whaling: A Memoir". DigitalCommons@University of Nebraska - Lincoln. Archived from the original on 5 March 2016. Retrieved 10 March 2016.