1. American Public Health Association (APHA), 1998. Standard Methods for the Examination of Water and Wastewater, 20th ed. APHA, Washington, DC.
2. Carbon dioxide control with a packed column aerator;Grace,1993
3. Carbon dioxide control;Grace,1994
4. A semi-closed recirculating water system for high density culture of rainbow trout;Heinen;Progressive Fish Culturist,1996
5. Acid–base reactions in gas transfer: a mathematical approach;Howe;Journal American Water Works Association,1989