1. Biswas S (2003) Groundwater flow direction and long term trend of water level of Nadia district, West Bengal: A statistical analysis. J Geol Soc India 61: 22–36
2. Chaudhary BS, Kumar M, Roy AK, Ruhal DS (1996) Applications of remote sensing and GIS in groundwater investigations in Sohna block, Gurgaon district, Haryana, India. International Archives of Photogrammetry and Remote Sensing 31, B-6, Vienna, Austria, pp. 18–23
3. Custodio E (2002) Aquifer overexploitation: what does it mean? Hydrogeology Journal 10: 254–277
4. Rodell M, Isabella V and James SF (2009) Satellitebased estimates of groundwater depletion in India. Nature 460, 789
5. Statistical abstract (2009) State statistical abstract of Haryana (2007–08), Govt. of Haryana Publication no. 910, Chandigarh, India