1. Individual identification of sperm whales;Arnbom;Reports of the International Whaling Commission,1987
2. The two faces of El Niño 1982-83;Arntz;Meeresforschung,1986
3. Caribou movement as a correlated random walk;Bergman;Oecologia,2000
4. Sperm whale social units: variation and change;Christal;Canadian Journal of Zoology,1998
5. Beaks, nets and numbers;Clarke;Symposia of the Zoological Society, London,1977