Journal Article
Schielzeth, H.; Kamp, J.; Eichhorn, G.; Heincke, T.; Koshkin, M. A.; Lachmann, L.; Sheldon, R. D.; Koshkin, A. V.: Wader, gull and tern population estimates for a key breeding and stopover site in Central Kazakhstan. Bird Conservation International
20 (2), pp. 186 - 199 (2010)