http://www.thyssenkrupp-industrial-solutions-india.com/uploads/Article-in-ASME.pdf
https://www.ijedr.org/papers/IJEDR1603035.pdf
http://engineering.moonish.biz/files/2013-04-06_FEAofPressureVessel_Part2.pdf
http://publications.lib.chalmers.se/records/fulltext/142656.pdf
http://www.osti.gov/scitech/servlets/purl/4173473