1. Perry, R.H.; Green, D.W. ; Maloney, J.O. Perry's Chemical Engineers' Handbook, 6th ed.; McGraw-Hill International Editions: Singapore, 1984, pp 3–98.
2. Apel, W.A.; Barnes, J.M.; Barrett, K.B. Biofiltration of Nitrogen Oxides from Fuel Combustion Gas Streams. In Proceedings of the 88th Annual Meeting and Exhibition of A&WMA, San Antonio, Texas, June 18-23, 1995; 95-TP9C.04.
3. Davidova, Y.B.; Schroeder, E.D.; Chang, D.P.Y. Biofiltration of Nitric Oxide. In Proceedings of the 90th Annual Meeting and Exhibition of A&WMA, Toronto, Ontario, Canada, June 8-13, 1997; 97-WP71B.05.
4. Smith, P.J.; Biswas, P.; Suidan, M.T.; Brenner, R.C. Treatment of Volatile Organic Compounds in Waste Gases Using a Trickling Biofilter System: A Modeling Approach. In Proceedings of the 86th Annual Meeting and Exhibition of A&WMA, Denver, CO, June 13-18, 1993.
5. Sorial, G.A.; Smith, F.L.; Smith, P.J.; Suidan, M.T.; Biswas, P.; Brenner, R.C. Development of Aerobic Biofilter Design Criteria for Treating VOCs. In Proceedings of the 86th Annual Meeting and Exhibition of A&WMA, Denver, CO, June 13-18, 1993; 93–B.06.