1. Private communication;Beere,1976
2. Engineering geology of Norwegian normally consolidated marine clays as related to settlements of buildings;Bjerrum;Seventh Rankine Lecture, Geotechnique,1976
3. Problems of soil and construction on soft clays and structurally unstable (collapsible, extensive and others);Bjerrum,1973
4. Earth pressure at rest related to stress history;Brooker;Canadian Geotechnical Journal,1965
5. Geotechnical properties of normally consolidated Fao clay, Iraq;Hanzawa,1977