Interseasonal variation in blood concentrations of organochlorines in great black-backed gulls (Larus marinus)
Bustnes, J.O., Skaare, J.U., Berg, V. & Tveraa, T. 2005. Interseasonal variation in blood concentrations of organochlorines in great black-backed gulls (Larus marinus). Environmental Toxicology and Chemistry 24: 1801-1806.