1. Alderman J., Ratcliffe J., McDougal L. North Carolina Atlas of Freshwater Mussels and Endangered Fish. http://www.ncwildlife.org/pg07_WildlifeSpeciesCon/pg7b1.htm. February, 2005.
2. Measurement and analysis of atmospheric ammonia emissions from anaerobic lagoons;Aneja;Atmos Environ,2001
3. Ammonia emissions in Europe: updated emission and emission variations. Report No. 228471008;Asman,1992
4. Lagoon design and management for livestock waste treatment and storage;Barker,1996
5. Livestock manure production rates and nutrient content;Barker,2006