1. Mercury content in feathers of Swedish birds from the past 100 years;Berg;Oikos,1966
2. The significance of the Dutch Wadden Sea in the annual life cycle of arctic, subarctic and boreal waders;Boere;Ardea,1976
3. Mercury levels in feathers of eagle-owls Bubo bubo in a captive, a reintroduced and a native wild population in SW Sweden;Broo;Holarct. Ecol.,1981
4. Lead toxicosis and salt glands in domestic ducks;Buggiani;Bull. environ. Contam. & Toxicol.,1980
5. The mercury content in feathers of the Sparrowhawk Accipiter nisus in Norway;Bühler;Fauna norv. Ser. C. Cinclus,1982