1. Theory of anisotropic shells;Ambartsumyan;NASA TT F-118,1961
2. Flexural vibration of the walls of thin cylindrical shells having freely supported ends;Arnold,1953
3. On the equation of elastic vibrations of a cavity partially filled with fluid;Dokuchaev;Mekhanika,1965
4. Free vibration of conical shells;Hu;NASA TN D-2666,1965