1. Regional Groundwater Quality;Alley,1993
2. Geochemical characteristics of groundwaters in Cheju Island;Choi;J. Geol. Soc. Korea,1989
3. Seawater intrusion in the coastal area of Cheju Volcanic Island, Korea;Choi;J. Korean Inst. Min. Geol.,1991
4. Cooper, H.H.Jr., Kohout, F.A., Henry, H.R., Glorer, R.E., 1964. Seawater in coastal aquifers, relation of salt water to fresh water. U.S.G.S. Water-Supply Paper 1613c, p. 88.
5. Hydrogeochemistry and tracers in ground-water problems in coastal areas;Custodio;Stud. Rep. Hydrol.,1987