1. Vadkacsák sörét eredetúólommérgezése (Lead poisoning of wild ducks caused by lead shots);Ákoshegyi;Magyar Állatoruosok Lapja,1994
2. Blood lead, protoporphyrin, and ingested shot for detecting lead poisoning in waterfowl;Anderson;Wildlife Society Bulletin,1985
3. Incidence of ingested shot in waterfowl in the Mississippi flyway, 1977–1979;Anderson;Wildlife Society Bulletin,1987
4. Lead poisoning as a mortality factor in waterfowl populations;Bellrose;Illinois Natural History Survey Bulletin,1959
5. Duck Wings—A Study of Duck Production;Boyd,1975