9Kim W H, Daniel D E. Effects of freezing on hydraulic conductivity of compacted clay. Journal of Geotechnical Engineering, 1992 ; 118 (7) : 1083--1097.
10Aoyama K, Ogawa S, Fukuda M. Temperature dependencies of mechanical properties of soils subjected to freezing and thawing . Proceedings of the 4th International Symposium on Ground Freezing, 5 - 7 Aug. , 1985, Sapporo, Japan. A.A. Balkema publishers, Rotterdam, the Netherlands, 1985:217--222.