Verheyen, D.A.M.; Verdaat, H.; Ijzer, J.; Brasseur, S.M.J.M.; Leopold, M.F. (2012). Harbour seals (Phoca vitulina) in Dutch inland waters: an overview of reported sightings and some first data on diet. Lutra 55(2): 89-99, more
Verheyen, D.A.M. (2011). An evaluation of the behavioural response of southern right whales (Eubalaena australis) on boat and swimmer interactions in the bay of San Antonio, Patagonia, Argentina. MSc Thesis. Ghent University: Gent. 29, V pp., more
Haelters, J.; Kerckhof, F.; Verheyen, D.; Jauniaux, T. (2011). The diet of harbour porpoises bycaught or washed ashore in Belgium: exploratory study and results of initial analyses. Royal Belgian Institute of Natural Sciences. Management Unit of the North Sea Mathematical Models. Marine Ecosystem Management Unit: Oostende. 29 pp., more
