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KHAN, R.A.; CAMPBELL, J.; LEAR, H. . (1981). MORTALITY IN CAPTIVE ATLANTIC COD, Gadus morhua, ASSOCIATED WITH FIN ROT DISEASE. Journal of Wildlife Diseases, 17(4), 521–527. doi:10.7589/0090-3558-17.4.521 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research