Bousfield, M A, and Ye V Syroechkovskiy. “A Review of Soviet Research on the Lesser Snow Goose on Wrangel Island, U.S.S.R. R”. Wildfowl 36 (November 1, 1985): 13–20. Accessed April 19, 2026. https://tidsskrift.dk/Wildfowl/article/view/155031.