Green, A. J.
, Fox, A. D., Hughes, B. & Hilton, G. M. (1999).
Time-Activity Budgets and Site Selection of White-Headed Ducks Oxyura leucocephala at Burdur Lake, Turkey, in Late Winter.
Bird Study,
46, 62-73.
Kristiansen, J. N., Walsh, A. J.
, Fox, A. D., Boyd, H. & Stroud, D. A. (1999).
Variation in the Belly Barrings of the Greenland White-Fronted Goose Anser albifrons flavirostris.
Wildfowl,
50, 21-29.
Noer, H. & Kørvel, H. (Ed.) (1999).
Vildtforskning. In H. Kørvel (Ed.),
Gyldendals Jagthåndbog (pp. 319-321). Gyldendal.
Clausen, P. & Kørvel, H. (Ed.) (1999).
Vildtreservater. In H. Kørvel (Ed.),
Gyldendals Jagthåndbog (pp. 327-331). Gyldendalske Boghandel.