[1] . NCRP Report No.93, 1987.
[2] . Sinnaeve J et al:Rediat Protect Dosimet 1984:7(1~4):15.
[3] . UNSCEAR:Ionizing Radiation:Soures and Bilolgical Effects 1982, p141~210, United Nations:New York.
[4] . Victor E and Archer MD:J Occ Med 1981, 23(7):502.
[5] . BEIR IV:Health Risks of Radon and Other Internally Deposited Alpha Emitters 1988, National Academy, Washington.
[6] . Sevc J et al:Health Phys 1988, 54(1):27.
[7] . Chameaud J et al:Proc Int Conf Radiation Harzards in Mining 1981, p222~227, New York.
[8] . NCPP Report No.78, 1984, Bethesda Maryland.
[9] . ICRP Publication 50, 1986, Oxford.
[10] . ICRP Publication 39, 1984, Oxford.
[11] . Swedjemark GA:Health Phys 1986, 51(5):569.
[12] . ICRP Publication 26, 1977, Oxford.
[13] . ICRP Publication 32, 1981, Oxford.
[14] . Nero AV:Health Phys 1983, 45(2):277.
[15] . Sinnaeve J:Radiat Protect Dosimet 1984, 7(1~4):427.
[16] . NCRP Report No.77, 1984, Bethesda Maryland.
[17] . O'Riordan MC:Radiol Prot Bull 1982, 46:7.
[18] . National Institute of Radiation Protection:Radon in Hòusing, 1984, Stockholm Sweden.
[19] . Auxier JA:Health Phys 1976, 31(2):119.
[20] . National Radiological Protection Bord:Radiological Protection Standards ASP 10, 1987.
[21] . Hileman B:Environ Sci Technol 1983, 17(10):469A.