1. Aarefjord, H., Bjørge, A., Kinze, C.C., Lindstedt, I., 1995. Diet of the harbour porpoise, (Phocoena phocoena), in Scandinavian waters. In: Bjørge, A., Donovan, G.P. (Eds.), Biology of Phocoenids (Special Issue), Vol. 16. International Whaling Commission, Cambridge, pp. 211–222.
2. The dynamics of California sea lion predation on Pacific hake;Bailey;Fish. Res.,1982
3. Differences in feeding habits between pregnant and lactating spotted dolphins (Stenella attenuata);Bernard;J. Mamm.,1989
4. Best, P.B., Canham, P.A.S., Macleod, N., 1984. Patterns of reproduction in sperm whales, Physeter macrocephalus. In: Perrin, W.F., Brownell, R.L.J., DeMaster, D.P. (Eds.), Reproduction in Whales, Dolphins and Porpoises (Special Issue), Vol. 6. International Whaling Commission, Cambridge, pp. 51–79.
5. Bigg, M.A., Fawcett, I., 1985. Two biases in diet determination of northern fur seals (Callorhinus ursinus). In: Beddington, J.R., Beverton, R.J.H., Lavigne, D.M. (Eds.), Marine Mammals and Fisheries. George Allen and Unwin, London, pp. 284–291.