Southwell, C.J.; Paxton, C.G.M.; Borchers, D.L.; Boveng, P.L.; Nordøy, E.S.; Blix, A.S.; De La Mare, W.K. (2008), Estimating population status under conditions of uncertainty: the Ross seal in East Antarctica, Antarctic Science 20 (2): 123–133. doi:10.1017/s0954102007000879
doi.org
Berta, A.; Churchill, M. (2012). «Pinniped taxonomy: Review of currently recognized species and subspecies, and evidence used for their description». Mammal Review. 42 (3): 207–34. doi:10.1111/j.1365-2907.2011.00193.x.CS1-vedlikehold: Flere navn: forfatterliste (link)