8[15]D K Ammerman. Once the province of communities the South and West, water reuse is gaining popuarity throughout the U nitd States [J]. Water Environment & Technology, 1998, 67-71.
9[16]M Rihmqn. City Sets New Standard for Converting Wastwater to Potable Water [J]. Water Environment &Technology, 1997,22-24.
10[17]V Jagnnatha. Minimising & Rccyclingurba[J]. Wastwater Asian Water, 1998,28-29.