5BELKHIRI L,BOUDOUKHA A,MOUNI L.A multivariate statistical analysis of groundwater chemistry data[J].International Journal of Environmental Research,2011,5(2):537-544.
6MAHMOOD A,MUQBOOL W,MUMTAZ M W,et al.Application of multivariate statistical techniques for the characterization of ground water quality of Lahore,Gujranwala and Sialkot(Pakistan)[J].Comprehensive Biotechnology,2011,12(9):102-112.
7NUDE P M,BANOENG-YAKUBO B,SAKYI P A,et al.Groundwater evolution in the Voltaian Basin,Ghana-an application of multivariate statistical analyses to hydrochemical data[J].Natural Science,2011,3(10):837-854.