1. Loess and its engineering problems in the U.S.S.R.;Abelev,1988
2. Aspects of engineering properties of loessial soils along Khorat-Khon Kaen highway;Adhikari,1989
3. The collapse mechanism in partly saturated soil;Barden;Eng. Geol.,1973
4. Problem of regional soils;Chen,1987
5. Collapsible Soils: Identification, Treatment and Design Considerations;Clemence,1985