1. National Research Council.Air Emissions from Animal Feeding Operations: Current Knowledge, Future Needs. The National Academies Press: Washington, DC, 2003.
2. Zahn, J.A.; Hatfield, J.L.; Laird, D.A.; Hart, T.T.; Do, Y.S. DiSpirito, A.A. Functional Classification of Swine Manure Management Systems Based on Effluent and Gas Emission Characteristic;J. Environ. Qual.2001,30, 635-647.
3. Schiffman, S.S.; Bennett, J.L.; Raymer, J.H. Quantification of Odors and Odorants from Swine Operations in North Carolina;Agric. Forest Meteorol.2001,108, 213-240.
4. Koziel, J.A.; Lo, Y.C.; Wright, D.; Trabue, S.; Kerr, B. The Use of SPME and Multidimensional GC-MS-Olfactometry System for Identification of Key Odorants from Swine Manure. InProceedings of the 2005 AWMA Annual Meeting and Exhibition, Minneapolis, MN; AW&MA: Pittsburgh, PA, 2005; Paper 996.
5. ASTM. E697-91. Standard Practice for Determining Odor and Taste Thresholds by Force-Choice Concentration Series Method of Limits. InAnnual Book of Standards; American Society of Testing and Materials: Philadelphia, PA, 2001.