1. Andrews, S.S., 1998. Sustainable agriculture alternatives: ecological and managerial implications of poultry litter management alternatives applied to agronomic soils. Dissertation, University of Georgia, Athens, GA, USA.
2. Anonymous, 1992. Farm composting economics. Biocycle 33 (8), 88–90.
3. Estimating the availability of nitrogen in poultry manure through laboratory and field studies;Bitzer;Journal of Environmental Quality,1988
4. Braun, L.C., 1996. Nitrogen losses from broiler litter applied to fescue grasslands. Agronomy Abstracts, SSSA, Inc. and ASA, Inc., Madison, WI, p. 312.
5. Ammonia volatilization for surface-applied, fresh and composted poultry litter;Brinson;Plant and Soil,1994