8Clark I D, Fritz P. Environmental Isotopes in Hydrogeology[M]. New York: CRC Press LLC, 1997.
9Craig H,Gordon I,Results Y. Isotopic exchange effects in the evaporation of water. I: Low temperature experimental results [J], J. Geophys. Res,1963,68:5079-5087.
10Dansgaard W. The abundance of 180 in atmospheric water and water vapour [J]. Tellus, 1953,5:461-469.