TY  - BOOK
AU  - Ballesteros, Porfirio
TI  - Nonlinear dynamic buckling of an imperfect spherical concre-te shell / Porfirio Ballesteros
CY  - Darmstadt, [ ] : IASS
N1  - "Contributions to the IASS Symposium 1978 Nonlinear behavio-ur of reinforced concrete spatial structures, july 3rd - 7t-h in Darmstadt"
ER  -