1. Stress, stability and vibration of complex branched shells of revolution: analysis and user's manual for BOSOR4;Bushnell;NASA CR-2116,1972
2. Computer analysis of ring-stiffened shells of revolution;Cohen;NASA CR-2085,1973
3. Numerical analysis of stiffened shells of revolution;Svalbonas;NASA CR-2273,1973
4. Analysis of multicircuit shells of revolution by the field method;Cohen;Comp. Meths. Appl. Mech. Engng,1976