O. De Donato
- Finite element elastoplastic analysis of underground openings by quadratic programming. Vorgetragen bei: IABSE Seminar: Structures en béton soumises à des Contraintes Triaxiales = Triaxial beanspruchte Betontragwerke = Concrete Structures Subjected to Triaxial Stresses, Bergamo, Italy, 1975. (1974):