1. Allen E. R. and Phatak S. (1993). “Control of organo-sulfur compound emissions using biofiltration—methyl mercaptan.” Proc. Air & Waste Mgmt. Assn. 86th Annu. Meeting & Exhibition .
2. Allen E. R. and Yang Y. (1991). “Biofiltration control of hydrogen sulfide emissions.” Proc. Air & Waste Mgmt. Assn. 84th Annual Meeting & Exhibition .
3. Apel W. A. Barnes J. M. and Barrett K. B. (1995). “Biofiltration of nitrogen oxides from fuel combustion gas streams.” Proc. Air & Waste Mgmt. Assn. 88th Annu. Meeting & Exhibition .
4. Barshter D. W. Paff S. W. and King A. B. (1993). “Biofiltration—room temperature incineration.” Proc. Air & Waste Mgmt. Assn. 86th Annu. Meeting & Exhibition .
5. Bishop W. Witherspoon J. Card T. Chang D. and Corsi R. (1990). “Air emissions control technology assessment.” Proc. Post-Workshop Water Pollution Control Fedn. (WPCF) Res. Found. 7.1–7.9.