1. Great Lakes Water Quality Agreement http://www.epa.gov/greatlakes/glwqa/
2. Allan RJ Ball AJ Cairns VW Fox GA Gilman AP Peakall DB Piekarz DA Van Oosdam JC Villeneuve DC Williams DT. 1991 Toxic Chemicals in the Great Lakes and Associated Effects
3. Exposure and effects of chemical contaminants on tree swallows nesting along the Housatonic River, Berkshire County, Massachusetts, USA, 1998-2000;Custer;Environ Toxicol Chem,2003
4. Exposure and effects of 2,3,7,8-tetrachlorodibenzo-p-dioxin in tree swallows (Tachycineta bicolor) nesting along the Woonasquatucket River, Rhode Island, USA;Custer;Environ Toxicol Chem,2005
5. Effects on tree swallows exposed to dioxin-like compounds associated with the Tittabawassee River and floodplain near Midland, Michigan, USA;Fredricks;Environ Toxicol Chem,2011