REFERENCES
- Kumar , A , Usha , N Sawant , P D . 2011a . Risk assessment for natural uranium in subsurface water of Punjab State, India . Hum Ecol Risk Assess , 17 ( 2 ) : 381 – 93 . doi: 10.1080/ 10807039.2011.552395
- Rathore , DPS. 2013 . Letter to HERA's Editor concerning the article “Risk Assessment for Natural Uranium in Subsurface Water of Punjab State, India” (Kumar et al. 2011a) . Hum Ecol Risk Assess , 19 : 1147 – 1149 .