1. Environmental Impact Assessment;Abbasi,2000
2. Use of a water quality index for river classification and zoning of Ganga River;Bhargava;Environmental Pollution Series B: Chemical and Physical,1983
3. Water quality variations and control technology of Yamuna River;Bhargava;Environmental Pollution Series A: Ecological and Biological,1985
4. Development of a water quality index based on a European classification scheme;Boyacioglu;Water SA,2007
5. Brown, R.M., McClelland, N.I., Deininger, R.A., Landwehr, J.M. (1973). Validating the WQI. The paper presented at national meeting of American society of civil engineers on water resources engineering, Washington, DC.