[1]
Nilsson, L. and Kampe-Persson, H. 2013. Censuses of autumn staging and wintering goose populations in Sweden 1977/1978—2011/2012. Ornis Svecica. 23, 1 (Jan. 2013), 46–60. DOI:https://doi.org/10.34080/os.v23.22582.