Peter Sand, "Japan's ‘Research Whaling’ in the Antarctic Southern Ocean and the North Pacific Ocean in the Face of the Endangered Species Convention (CITES)," Review of European Community & International Environmental Law, Vol. 17, No. 1 (2008), pp. 56-71. doi:10.1111/j.1467-9388.2008.00587.x
Baker, C. S.; Dalebout, M. L.; Lento, G. M.; Funahashi, Naoko (2002). “Gray Whale Products Sold in Commercial Markets Along the Pacific Coast of Japan”. Marine Mammal Science（英語版）18: 295. doi:10.1111/j.1748-7692.2002.tb01036.x.
「我々が新たに検証した」の詳細は Joe Roman, James A Estes, Lyne Morissette, Craig Smith, Daniel Costa, James McCarthy, JB Nation, Stephen Nicol, Andrew Pershing, and Victor Smetacek 2014. Whales as marine ecosystem engineers. Frontiers in Ecology and the Environment 12: 377–385. doi:10.1890/130220
Baker, C. S.; Dalebout, M. L.; Lento, G. M.; Funahashi, Naoko (2002). “Gray Whale Products Sold in Commercial Markets Along the Pacific Coast of Japan”. Marine Mammal Science（英語版）18: 295. doi:10.1111/j.1748-7692.2002.tb01036.x.
