T. Anker-nilssen, V. Bakken, H. Strøm, A. N. Golovkin, V. V. Bianki et al., The status of marine birds breeding in the Barents sea region, 2000.

M. G. Barron, H. Galbraith, and D. Beltman, Comparative reproductive and developmental 381 toxicology of PCB in birds, Comp. Biochem. Physiol, vol.112, pp.1-14, 1995.

I. Stirling, Persistent organic pollutants and mercury in marine biota of the Canadian 385, 2005.

K. P. Burnham and D. R. Anderson, Model selection and multimodel inference: a practical 388 information-theoretic approach, 2002.
DOI : 10.1007/b97636