. "Bibliography on structural stability of conical and spherical thin shells (1916-1970)" . . . . . . . . . "Bibliography on structural stability of conical and spherical thin shells : (1916 - 1970)" . . "Bibliography on structural stability of conical and spherical thin shells <1916-1970>" . . "DFL." . . "DVL." . . "DFVLR." . . . . "ZLDI." . . "DGLR." . .