TY  - BOOK
AU  - Rozvany, G. I. N.
AU  - Cohn, M. Z., coaut.
TI  - lower bound approach to the optimal design of concrete fram-es and slabs / by G. I. N. Rozvany and M. Z. Cohn
CY  - Ontario, Canadá : University of Waterloo, Solid Mechanics Division
ER  -