1. Hyperbolic cooling towers under seismic load;Gould;J. Struct. Div., ASCE,1967
2. Maximum seismic response of cooling towers;Abel,1973
3. Earthquake design of cooling towers;Abu-Sitta;J. Struct. Div., ASCE,1970
4. Free vibrations of hyperboloidal shells of revolution;Carter;J. Eng. Mech., ASCE,1969
5. Free vibration of hype bolic cooling towers;Hashish;J. Eng. Mech. ASCE,1971