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The Twisting of Thin-walled, Stiffened Circular Cylinders (1938)
NASA Technical Reports Server (NTRS) · leaf 33
Jigs. 2,3,4 N. A. C. A. Technical Memorandum No. B78 Figure 4.- Cylinder No. IV after buckling of the skin.NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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