1. The buckling of spherical shells by external pressure;von Kármán;J. Aero. Sci.,1939
2. The buckling of spherical shells by external pressure (1st Report);Yoshimura,1949
3. The buckling of spherical shells by external pressure (2nd Report);Uemura,1952
4. The buckling of spherical shells by external pressure (3rd Report);Uemura;J. Japan Soc. Aero. Sci.,1954
5. Proc. 3rd Japan Nat. Congr. appl. Mech.;Uemura,1953