1. MATURATION OF LARVAL PSEUDOPHYLLIDEAN CESTODES AND STRIGEID TREMATODES UNDER AXENIC CONDITIONS; THE SIGNIFICANCE OF NUTRITIONAL LEVELS IN PLATYHELMINTH DEVELOPMENT
2. Studies of the helminth fauna of Norway, 1: Taxonomy and ecology of Diphyllobothrium norvegicum n. sp. and the plerocercoid of Diphyllobothrium latum (L.);Vik;Nytt Magasin for Zoology,1957
3. Studies of the helminth fauna of Norway XV: On the taxonomy and biology of plerocercoids of Diphyllobothrium Cobbold, 1858 (Cestoda, Pseudophyllidea) from North-western Europe;Halvorsen;Nytt Magasin for Zoology,1970
4. Primary anlage formation in diphyllobothriid Tapeworms;Wikgren;Zeitschrift für Parasitenkunde,1971
5. Anpassningsfenomen hos parasitter;Wikgren;Tiedoksianto-Information,1971