Laptikhovsky, Vladimir V., and Chingis M. Nigmatullin. 2005. “Aspects of Female Reproductive Biology of the Orange-Back Squid, Sthenoteuthis Pteropus (Steenstup) (Oegopsina: Ommastrephidae) in the Eastern Tropical Atlantic”. Scientia Marina 69 (3):383-90. https://doi.org/10.3989/scimar.2005.69n3383.