1. Buckling of spherical shells;Kaplan,1974
2. Theory of elastic stability;Timoshenko,1961
3. Beams, plates, and shells;Donnell,1976
4. Buckling of clamped spherical shells;Budiansky,1959
5. Unsymmetrical buckling of thin shallow spherical shells;Huang;J. Appl. Mech.,1964