1. API 650, Welded steel tanks for oil storage, American Petroleum Institute, 11th Edn, with Addendum 1 (2008) & 2 (2009) Washington, D.C., 2007.
2. Eurocode 3: Part 4.2: Tanks;EN 1993-4-2,2007
3. Spherical shells under uniform external pressure;Wunderlich,2008
4. Buckling behaviour of imperfect spherical shells;Wunderlich;Int J Nonlinear Mech,2002
5. Buckling of Shells: European Design Recommendations,2008