Johansson, F., T. Brodin, D. Strasevicius, and E. Fürstenberg-Hägg. “Shift in Migration Phenology of a Wintering Population of Dippers Cinclus Cinclus in Northern Sweden”. Ornis Svecica, vol. 27, no. 2–4, Oct. 2017, pp. 57–63, doi:10.34080/os.v27.19557.