1. The determination of free vibrations of longitudinally-stiffened, thin-walled, circular cylindrical shells.;Schnell;NASA TT F-8856,1964
2. Natural vibrations of a stiffened pressurized cylinder with an attached mass;Ojalvo;American Institute of Aeronautics and Astronautics Journal,1967
3. An analysis of free vibration of orthogonally stiffened cylindrical shells with stiffeners treated as discrete elements;Egle;American Institute of Aeronautics and Astronautics Journal,1968
4. A theoretical analysis of the free vibration of discretely stiffened cylindrical shells with arbitrary end conditions;Egle;NASA CR-1316,1969
5. An experimental and analytical vibration study of thin cylindrical shells with and without longitudinal stiffeners;Sewall;NASA TN D-4705,1968