1. Wichman, K. R., Hopper, A. G. and Mershon, J. L., Local stresses in spherical and cylindrical shells due to external loadings. WRC Bulletin 107/August 1965, Revision March 1979.
2. Stresses in cylindrical pressure vessels due to local loads;Wordsworth,1992
3. Comparison of local load stress calculation methods for nozzles on cylinders;Dekker;Int. J. Pres. Ves. & Piping,1994