1. W. Flügge: Die Stabilität der Kreiszylinderschale, Ing.-Arch. 3 (1932), 463–506.
2. L. H. Donnel: Stability of thin-walled tubes under torsion, NACA, Techn. Rep. 479 (1933).
3. J. Kearner: Remarks on Donnel’s equations, J. Appl. Mech. 22 (1955), 117–118;
4. N. J. Hoff: The accuracy of Donnel’s equations, J. Appl. Mech. 22 (1955), 329–334;
5. J. Moe: On the theory of cylindrical shells, explicit solution of the characteristic equation and discussion of the accuracy of various shell theories, Int. Assoc. Bridge Struct. Engg., Publ. 13 (1953), 283–296.