1. Abu-ElNaga HM. Calibration of dynamic cone results in cohesionless soils using artificial neural network. MSc thesis, Faculty of Engineering, Cairo University; 2001. p. 243.
2. Bjerrum L, Eggestad A. Interpretation of a loading test on sand. In: Proceedings of the European conference on soil mechanics and foundation engineering, Wiesbaden, vol. 1; 1963. p. 199–204.
3. Settlement distribution in the subsoil underneath a nuclear reactor;Breth,1974
4. Settlement of foundations on sand and gravel;Burland;Proc Inst Civil Eng (Part 1),1985
5. The use of continuous dynamic probing in ground investigation;Card,1988