[1]
V. E. Keller, U. Gallo-Orsi, I. J. Patterson, and B. Naef-Daenzer, “Feeding areas used by individual Pink-footed Geese Anser brachyrhynchus around the Loch of Strathbeg, North-East Scotland”, Wildfowl, pp. 52–64, Jan. 1997.