Cao, L., Syroechkovskiy, E., Koyama, K., Choi, C.-Y., Lee, H., Kondratyev, A.
& Fox, A. D. (2018).
C6 Eastern Palearctic Greater White-fronted Goose Anser albifrons frontalis. I A. D. Fox & J. O. Leafloor (red.),
A Global Audit of the Status and Trends of Arctic and Northern Hemisphere Goose Populations (Component 2: Population accounts). (s. 35-37). CAFF, Conservation of Arctic Flora and Fauna.
Bregnballe, T., Thorup, O., Jensen, P. E.
, Nielsen, R. D., Pedersen, K. T.
& Laursen, K. (2015).
Breeding success of Oystercatcher, terns and gulls in the Danish Wadden Sea. Technical Report from DCE – Danish Centre for Environment and Energy Bind 60
Bregnballe, T., Lynch, J. R., Parz-Gollner, R., Marion, L., Volponi, S., Paquet, J.-Y., Carss, D. N. & van Eerden, M. M. R. (2014).
Breeding numbers of Great Cormorants Phalacrocorax carbo in the Western Palearctic, 20122013: IUCN-Wetlands International Cormorant Research Group Report. Aarhus University, DCE - Danish Centre for Environment and Energy. Scientific Report from DCE - Danish Centre for Environment and Energy Nr. 99
http://dce2.au.dk/pub/SR99.pdf