1. Recommended practice for site specific assessment of mobile jack-up units: Technical and research bulletin 5-5A;The Society of Naval Architects and Marine Engineers,1997
2. The bearing capacity of clays;Skempton,1951
3. Theoretical and observed performance of mobile rig footings on clay;Gemeinhardt,1970
4. Geotechnical hazards associated with leg penetration of jack-up rigs;Kee,1984
5. Bearing capacity of circular foundations on soft clay of strength increasing with depth;Tani;Soils and Foundations,1995