1. Experience with the relay procedure for tuning controllers in automatic control of chlorination;Garrett,1993
2. The Handbook of Chlorination;White,1986
3. Dechlorination at a small scale treatment plant;Garrett;Project Report,1990
4. Improvement program in chlorination systems;Dieu;Project Report,1993
5. Automatic Tuning of PID Controllers;Astrom,1988