1. The Horokiwi Stream: A study of a trout population;Allen;Fishery Bulletin New Zealand,1951
2. Untersuchungen über das Farbmuster und das Wachstum der Molluskenschale;Becker;Biologisches Zentralblatt,1949
3. Studies on the bottom animals of Esrom Lake.Det Kongelige Danske Videnskabernes Selskab;Berg;Skrifter, naturvidenskabelig og mathematisk Afdeling,1938
4. A comparison of the life cycles, reproductive ecologies and size-weight relationships of Helisoma anceps, H. campanulatum, and H. trivolvis (Gastropoda, Planorbidae);Boerger;Canadian Journal of Zoology – Revue,1975
5. Preliminary investigations into the development of Neritina fluviatilis L. in Brackish and Fresh Water;Bondesen;Videnskabelige Meddelelser fra Dansk Naturhistorisk Forening,1940