| Authors(s) | Verboom, W. C. and R. A. Kastelein. |
| Year | 1995b |
| Title | The rutting whistles of a male Pacific walrus (Odobenus rosmaruas divergens), In: Sensory systems of Aquatic Mammals (eds. R. A. Kastelein, J. A. Thomas and P. E. Nachtigall), De Spil Publishers, Woerden Holland. |