1. TJ 7-74;Bureau of the National Architecture of P.R. China;Standard Specifications for Foundation Designs of Industrial and Civil Architecture,1974
2. Frost heave of soils under different ground water levels;Chen,1986
3. JTJ 02485;Ministry of Communications of P.R. China;Standard Specification of the Foundation Designs of Highway and Bridge,1985
4. Frost heave classification for permafrost regions;Tong,1983
5. Frost heave susceptibility of different soils under different ground water levels;Wang;J. Glaciol. Geocryol.,1980