Borgstrøm, R.; Hatleli Mestrand, Øyvind .; Brittain, J. E.; Lien, L. . The Helminth Fauna of Brown Trout (Salmo Trutta) from a Sub-Alpine Lake Revisited After 40 Years With Introduced European Minnow (Phoxinus Phoxinus). Fauna Norv. 2021, 41, 15-26.