1. World Health Organization (2006) Guidelines for drinking water quality
2. Martin JE (1987) Appl Radiat Isot 38(11):953–957
3. Grate JW, Strebin R, Janata J (1996) Anal Chem 68:333–340
4. Heilgeist M (2006) J Radioanal Nucl Chem 245(3):249–254
5. Hegde AG, Sharma LN, Chandramouli S, Rao DD, Matkar V, Verma PC, Rajan MP, Reviewed by Rudran K, Iyengar MAR, Gurg RP, Sundaram M (1998), Environmental surveillance, Procedure Manual