1. Recommended Practice for Planning, Designing and Constructing Fixed Offshore Platforms: Working Stress Design: RP 2A-WSD,2007
2. Structural Design of Offshore Units (WSD Method). Offshore Standard, DNV OS C201, Norway,2008
3. Fatigue design of offshore steel structures. Recommended Practice, DNV RP C203, Norway,2005
4. A Fracture Mechanics Approach to the Fatigue Assessment of Tubular Welded Y and K-Joints;Connolly,1986
5. Prediction of degree of bending in tubular X and DT joints;Chang;Int. J. Fatigue,1999