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2. F.L. DiMaggio, A. Silbiger, Free extensional torsional vibrations of a prolate spheroidal shell, Contract No. 266(67), Project 385-414, Technical Report No. 2, Office of Naval Research, 1960
3. A. Silbiger, F.L. DiMaggio, Extensional axisymmetric second class vibrations of a prolate spheroidal shell, Contract No. 266(67) Project 385-414, Technical Report No. 3, Office of Naval Research, 1961
4. Free extensional torsional vibrations of a prolate spheroidal shell;DiMaggio;J. Acoust. Soc. Am.,1961
5. Perturbation solution for the axisymmetric vibrations of prolate spheroidal shells;Shiraishi;J. Acoust. Soc. Am.,1962