Hassani, S., L. Dupuis, J. F. Elder, E. Caillot, G. Gautier, A. Hemon, J. M. Lair, and J. Haelters. “A note on harbour seal (<i>Phoca vitulina</i>) distribution and abundance in France and Belgium”. NAMMCO Scientific Publications, vol. 8, Sept. 2010, pp. 107-15, doi:10.7557/3.2678.