Østbye, E., Hogstad, O., Østbye, K., Lien, L., Framstad, E. and Breiehagen, T. (2007) “Structure and dynamics of a high mountain wetland bird community in southern Norway: An 18-year study of waders and gulls”, Ornis Norvegica, 30, pp. 4–20. doi: 10.15845/on.v30i0.181.