Rik de Swart, Peter Ross, Lies Vedder, Helga Timmerman, Siem Heisterkamp, Henk Van Loveren, Joseph Vos, Peter JH Reijnders, Albert Osterhaus,
Impairment of Immune Function in Harbor Seals (Phoca vitulina) Feeding on Fish from Polluted Waters AMBIO: A Journal of the Human Environment. ,vol. 23, pp. 155- 159 ,(1994) ,
10.1579/0044-7447-31.1.1