Kazemi, Elham Optimization of interpolation method for nitrate pollution in groundwater and assessing vulnerability with IPNOA and IPNOC method in Qazvin plain. [electronic resource] - Journal of environmental health science & engineering 2017 - 23 p. digital Publication Type: Journal Article ISSN: 2052-336X Standard No.: 10.1186/s40201-017-0287-x doi