Back, W. (1966), Hydrochemical facies and ground-water flow patterns in northern part of Atlantic Coastal Plain. U.S. Geological Survey Professional Paper 498-A
Beatriz, A.H., Vega, M., Barrado, E., Pardo, R. and Fernandez, L. (1998), A case study of hydrochemical characteristics of an alluvium aquifer influenced by human activities, Air, water and Soil pollution Bulletin.
Cloutier, V. (2004), Origin and geochemical evolution of groundwater in the Paleozoic Basses-Laurentides sedimentary rock aquifer system, St. Lawrence Lowlands, Québec, Canada. PhD Thesis, INRS-Eau, Terre & Environnement, Québec, Canada [in French and English]
Dalton, M.G. and Upchurch, S.B. (1978), Interpretation of hydrochemical facies by factor analysis, Groundwater, V. 16, pp. 228-233
Dawdy, D.R., Feth, J.H. (1967), Application of factor analysis in steady of chemistry of groundwater quality, Mojaveriver Vally, California, Water Resour. Res.3(2), pp. 505-510.
Freeze, R.A. and Cherry, J.A. (1979), Groundwater, Prentice-Hall, Inc., Englewood Cliffs, New Jersey
Gosselin, D.C., Harvey, F.E. and Frost, C.D. (2001), Geochemical evolution of ground water in the Great Plains aquifer of Nebraska: Implications for the management of a regional aquifer system. GroundWater 39(1): pp. 98–108.
Hem, J.D. (1985), Study and interpretation of the chemical characteristics of natural water. U.S. Geological Survey Water-Supply Paper 2254, Third Edition.
Hendry, M.J. and Schwartz, F.W. (1990), The chemical evolution of ground water in the Milk River Aquifer, Canada. Ground Water 28(2): pp. 253–261.
Hitchon, B., Billing, G.K. and Kolvan, J.E. (1971), Geochemistry and origin of formation waters in the western Canada sedimentary basin, III. Factor controlling chemical composition, Geochem. Cosmochem. Acta, 35, pp. 567-598.
Jankowski, J., Shekarforosh, S. and Acworth, R.I. (1998), Reverse ion exchange in a deeply weathered prophyritic dacit fractured aquifer system, Yass, New South Wales, Australia, In Arehord G.B. & Hulston R. (eds.) Proceeding of 9th International Symposium on Water Rock Interaction, Taupo, New Zealand, Rotterdam: Balkema, pp. 243-246.
Jeong, C. (2001), Mineral-water interaction and hydrogeochemistry in the Samkwang mine area, Korea. Geochemical Journal, Vol. 35, pp. 1-12
Ken W. F. Howard. and Mullings, E. (1996), Hydrochemical Analysis of Ground-Water Flow and Saline Incursion in the Clarendon Basin, Jamaica, Groundwater, 34(6), pp. 801-810.
Lawrence, F.W. and Upchurch, S.B. (1982), Identification of water recharge areas using geochemical factor analysis, Groundwater, 20(6), pp. 680-687.
Liu, C.W., Lin, K.H. and Kuo, Y.M. (2003), Application of factor analysis in the assessment of groundwater quality in a blackfoot disease area in Taiwan, The Science of Total Environment, V.313, pp.77-89.
Marie, A. and Vengosh, A. (2001), Sources of salinity in groundwater from Jericho area, Jordan Vally, Grounwater, 39(2), pp. 240-248.
Nordstrom, D. K., Ball, J.W., Donahoe, R.J. and Whittemore, D. (1989), Groundwater chemistry and water-rock interaction at Stripa. Geochem. Cosmochem. Acta. 53, pp. 1727-1740.
Parkhurst, D.L., Appelo, C.A.J. (1999), User's guide to PHREEQC (version 2)—A computer program for speciation, batch-reaction, one-dimensional transport, and inverse geochemical calculations. U.S. Geological Survey, Water-Resources Investigations Report 99–4259
Piper, A.M. (1944), A graphic procedure in the geochemical interpretation of water-analyses. American Geophysical Union. Papers, Hydrology, pp. 914–923
Reghunath, R., Murthy, T.R.S. and Raghvan, B.R. (2002), The utility of multivariate statistical techniques in hydrogeochemical studies: an example from Karnataka, India, Water Research, Vol. 36., pp. 2437-2442.
Stober, I. and Bucher, K. (1999), Deep groundwater in the crystalline basement of the Balck Forest region, Applied Geochemistry, 14, pp. 237-254.
Subbarao, C., Subbarao, N.V. and Chandu, S.N. (1996), Characterization of groundwater contamination using factor analysis, Environmental Geology, V.28 No. 4, pp. 175-180.
Usunoff, E.J. and Guzman-Guzman, A. (1989), Multivariate analysis in hydrochemistry: An example of the use factor and correspondence analysis. Groundwater, 27, pp. 27-34.
)