D. Banks, A. K. Midtgard, G. Morland, C. Reimann, T. Strand, K. Bjorvatn and U. Siewers, “Is Pure Groundwater Safe to Drink? Natural ‘Contamination’ of Groundwater in Norway,” Geology Today, Vol. 14, No. 3, 1998, pp. 104-113. http://dx.doi.org/10.1046/j.1365-2451.1998.014003104.x
 C. Reimann, G. E. M. Hall, U. Siewers, K. Bjorvatn, G. Morland, H. Skarphagen and T. Strand, “Radon, Fluoride and 62 Elements as Determined by ICP-MS in 145 Norwegian Hard Rock Groundwater Samples,” Science Total Environment, Vol. 192, No. 1, 1996, pp. 1-19. http://dx.doi.org/10.1016/0048-9697(96)05272-2
 C. Reimann, U. Siwers, H. Skarphagen and D. Banks “Influence of Filtration on Concentrations of 62 Elements Analysed on Crystalline Bedrock Groundwater by ICPMS,” Science Total Environment, Vol. 234, No. 1-3, 1999, pp. 155-173. http://dx.doi.org/10.1016/S0048-9697(99)00165-5
 A. Misund, B. Frengstad, U. Siewers and C. Reimann, “Natural Variation of 66 Elements in European Mineral Waters,” Science Total Environment, Vol. 243, No. 244, 1999, pp. 21-41. http://dx.doi.org/10.1016/S0048-9697(99)00307-1
 I. Kim and G. Kim, “Large Fluxes of Rare Earth Elements through Submarine Groundwater Discharge (SGD) from a Volcanic Island, Jeju, Korea,” Marine Chemistry, Vol. 127, No. 1-4, 2011, pp. 12-19. http://dx.doi.org/10.1016/j.marchem.2011.07.006
 R. P. Janssen and W. Verweij, “Geochemistry of Some Rare Earth Elements in Groundwater, Vierlingsbeek, The Netherlands,” Water Research, Vol. 37, No. 6, 2003, pp. 1320-1350. http://dx.doi.org/10.1016/S0043-1354(02)00492-X
 G. G. Gruau, A. Dia, G. Olivie-Lauquet, M. Davranche and G. Pinay, “Controls on the Distribution of Rare Earth Elements in Shallow Groundwaters,” Water Research, Vol. 38, No. 16, 2004, pp. 3576-3586. http://dx.doi.org/10.1016/j.watres.2004.04.056
 M. A. Rasheed, B. A. Radha, P. L. Srinivasa Rao, M. Lakshmi, J. Bala Chennaiah and A. M. Dayal, “Evaluation of Potable Groundwater Quality in Some Villages of Adilabad in Andhra Pradesh, India,” Journal of Environmental Biolog, Vol. 33, 2012, pp. 689-693.
 B. Frengstad, A. K. Midtgard, D. Banks, J. R. Krog and U. Siewers, “The Chemistry of Norwegian Groundwaters. III. The Distribution of Trace Elements in 476 Crystalline Bedrock Groundwaters as Analysed by ICP-MS Techniques,” Science of the Total Environment, Vol. 246, No. 1, 2000, pp. 21-40. http://dx.doi.org/10.1016/S0048-9697(99)00413-1
 C. Reimanna, K. Bjorvatnb, B. Frengstada, Z. Melakuc, R. Tekle-Haimanotc and U. Siewersd, “Drinking Water Quality in the Ethiopian Section of the East African Rift Valley I—Data and Health Aspects,” The Science of the Total Environment, Vol. 311, No. 1-3, 2003, pp. 65-80. http://dx.doi.org/10.1016/S0048-9697(03)00137-2
 F. M. Anayah and M. N. Almasri, “Trends and Occurrences of Nitrate in the Groundwater of the West Bank, Palestine,” Applied Geography, Vol. 29, No. 4, 2009, pp. 588-601. http://dx.doi.org/10.1016/j.apgeog.2009.01.004
 P. Kurttio, A. Auvinen, L. Salonen, H. Saha, J. Pekkanen, I. Makelainen, S. B. Vaisanen, I. M. Penttila and H. Komulainen, “Renal Effects of Uranium in Drinking Water,” Environmental Health Perspectives, Vol. 110, No. 4, 2002, pp. 337-342. http://dx.doi.org/10.1289/ehp.02110337
 A. C. Hakonson-Hayes, P. R. Fresquez and F. W. Whicker, “Assessing Potential Risks from Exposure to Natural Uranium in Well Water,” Journal of Environmental Radioactivity, Vol. 59, No. 1, 2002, pp. 29-40. http://dx.doi.org/10.1016/S0265-931X(01)00034-0
 J. Fitzgerald, D. Cunliffe, S. Rainow, S. Dodds, S. Hostetler and G. Jacobson, “Groundwater Quality and Environmental Health Implications, Anangu Pitjantjatjara Lands, South Australia. Canberra,” Bureau of Rural Sciences, 2000.
 P. L. Smedley and D. G. Kinniburgh, “A Review of the Source, Behavior and Distribution of Arsenic in Natural Waters,” Applied Geochemistry, Vol. 17, No. 5, 2002, pp. 517-568. http://dx.doi.org/10.1016/S0883-2927(02)00018-5
 US EPA, “Consumer Factsheet on: Nitrates/Nitrites,” 2003. http://www.epa.gov/safewater/dwh/c-ioc/nitrates.html
 T. H. Jaing, I. H. Hung, H. T. Chung, C. H. Lai, W. M. Liu and K. W. Chang, “Acute Hypermagnesemia: A Rare Complication of Antacid Administration after Bone Marrow Transplantation,” Clinica Chimica Acta, Vol. 326, No. 1-2, 2002, pp. 201-203. http://dx.doi.org/10.1016/S0009-8981(02)00308-X
 W. M. Edmunds and P. L. Smedley, “Groundwater Geochemistry and Health. Overview,” In: J. D. Appleton, R. Fuge and J. G. H. Mc. Call, Eds., Enviromental Geochemistry and Health with Special Reference to Developing Countries, Geological Society, Special Publication, Vol. 113, 1996, pp. 91-105.
 US Environmental Protection Agency, “Strontium,” 2012.