3Harlan R L: Analysis of coupled heat fluid transport in partially frozen soil, Water Resources Rescarch,1973,19(5).
4Sheppard M, Key Bet al..Development and testing of computer model for heat and mass flow in freezing soils, The International Conference on Permafrost, Vol. 1, Edmonton, Alberta, Canada, 1978.
5Xu Xiaozu, Wang Jiacheng et al: Mechanics of frost heave and salt expansion of soils,Beijing, Science Press,1999.
6O'Neil K, Miller R D; Exploration of a rigid ice model of frost heave, Water Resources Research, 1985,21(3).
