1. Vibrations of multi-layered anisotropic cylindrical shells;Kunukkasseril;Watervliet Arsenal, Technical Report WVT-6717 (AD 649662),1967
2. Vibration of shells;Leissa;NASA SP-288,1973
3. Torsional vibrations of shells of revolution of variable thickness;Soni;Journal of the Acoustical Society of America,1973
4. Tables of Higher Functions;Janke-Emde-Lösch,1960