Laidre, K. & M.P.Heide-Jørgensen, 2005. The behavior of narwhals (Monodon monoceros) before, during, and after an attack by killer whales (Orcinus orca) in the Eastern Canadian Arctic.NAMMCO/SC/13-JCNB/SWG/2005-JWG/13 Udgivet 12.03.2019