1. Treybal, R. E. 1968.Mass Transfer Operations, 2nd Ed., 495–544. New York, NY: McGraw Hill Book Co.
2. Wark, K. and Warner, C. 1981. “Air Pollution: Its Origin and Control”. 261–273. Glenview, IL: Harper Collins College Publishers.
3. Crawford, M. 1976. “Air Pollution Control Theory”. 513–518. New York, NY: McGraw Hill, Inc.