Cost-effective method of water purification
  1. V. B. Preethi Sudha, K. Ojit Singh, Sasirekha Ramani, Anu Paul and Padma Venkatasubramanian.  Inactivation of rotavirus in water by copper pot. 2011 Journal of Water, Sanitation and Hygiene for Development .page no: 165-169

  2. V.B. Preethi Sudha, Sheeba Ganesan, G.P. Pazhani, T. Ramamurthy, G.B. Nair, and Padma Venkatasubramanian. Storing Drinking-water in Copper-pots Kills Contaminating Diarrhoeagenic Bacteria. J Health Popul Nutr 2012 Xxx;30(0): Intertre for Diarrhoeal Disease Research, Bangladesh

  3. V.B. Preethi Sudha, K. Ojit Singh, S.R. Prasad, Padma Venkatasubramanian. Killing of Enteric bacteria in drinking water by a copper device for use in the home: laboratory evidence. The Royal Society of Tropical Medicine and Hygiene (2009) 103, 819—822