(1)
Nilssen, A. C.; Hemmingsen, W.; Haugerud, R. E. Failure of two consecutive annual treatments with ivermectin to eradicate the reindeer parasites (Hypoderma tarandi, Cephenemyia trompe and Linguatula arctica) from an island in northern Norway. Ran 2002, 22, 115-122.