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2. Procter, E., and Findlers, R. F., 1967, “Experimental Investigation Into the Elastic/Plastic Behavior of Isolated Nozzles in Spherical Shells: Part II—Shakedown and Plastic Analysis,” Report RD/B/N861, Berkeley Nuclear Laboratories, C.E.G.B. Research Department, Berkeley, U.K.
3. Proctor, E. and Strong, J. T., 1972, “Pressure Tests on Flush Cylider-Cylinder Intersections. Elastic and Elastic/Plastic Behavior,” Report RD/B/N2244, Berkeley Nuclear Laboratories, C.E.G.B. Research Department, Berkeley, U.K.
4. Leckie, F. A., and Penny, R. K., 1967, “Shakedown Loads for Radial Nozzles in Spherical Pressure Vessels,” Int. J. Solids Struct., 3, pp. 743–755.
5. British Standards Institution, 1991, “Specification for Unfired Fusion Welded Pressure Vessels,” BS5500.