Balle, J. D., Tougaard, J., Petersen, I. K. & Dahl, K., (2013).
Choktest af fregatten PETER WILLEMOES, 7 s., mar. 21, 2013. Notat fra DCE - Nationalt Center for Miljø og Energi
http://dce.au.dk/fileadmin/dce.au.dk/Udgivelser/Chocktest_Peter_Willemoes.pdf
Tougaard, J., Petersen, I. K., Dahl, K., Balle, J. D. & Holm, T. E., (2013).
Choktest af fregatten Niels Juel, Nr. 13685, 8 s., dec. 19, 2013. Notat fra DCE - Nationalt Center for Miljø og Energi
Choi, C.-Y., Takekawa, J. Y., Prosser, D. J., Smith, L. M., Ely, C. R.
, Fox, A. D., Cao, L., Wang, X., Batbayar, N., Natsadorj, T. & Xiao, X. (2016).
Chewing Lice of Swan Geese (Anser cygnoides): New Host-Parasite Associations.
Korean Journal of Parasitology,
54(5), 685-691.
https://doi.org/10.3347/kjp.2016.54.5.685
Zhang, Y., Cao, L., Barter, M.
, Fox, A. D., Zhao, M., Meng, F., Shi, H., Jiang, Y. & Zhu, W. (2011).
Changing distribution and abundance of Swan Goose Anser cygnoides in the Yangtze River floodplain: the likely loss of a very important wintering site.
Bird Conservation International,
21(1), 36-48.
https://doi.org/10.1017/S0959270910000201
Cong, P., Cao, L.
, Fox, A. D., Barter, M., Rees, E., Jiang, Y., Ji, W., Zhu, W. & Song, G. (2011).
Changes in Tundra Swan Cygnus columbianus bewickii distribution and abundance in the Yangtze River floodplain.
Bird Conservation International,
21, 260-265.
https://doi.org/10.1017/S0959270911000098
Wang, X.
, Fox, A. D., Cong, P., Barter, M. & Cao, L. (2012).
Changes in the distribution and abundance of wintering Lesser White-fronted Geese Anser erythropus in eastern China.
Bird Conservation International,
22, 128-134.
https://doi.org/10.1017/S095927091100030X