Articles
| Yield Stress Distribution in the Natural Surface Layer of Polycrystals | |
| G. Starzyński, W. Gambin | 143-156 |
| Parametric Instability of Viscoelastic Nonlinear (Elastica) Columns | |
| G. Cederbaum, G. Suire | 157-167 |
| Dynamic Instability of Plates Made of Nonlinear Viscoelastic Materials | |
| G. Cederbaum, D. Touati | 169-180 |
| Influence of Constant and Monotonic Loadings on Subsequent Biaxial Behaviour of 15 HM Boiler Steel | |
| Z. L. Kowalewski | 181-206 |
| Three-Dimensional Slip-Line Field Theory With Rotational Continuity | |
| R. L. Bish | 207-228 |
| Ultimate Load and Postfailure Behaviour of Box-Section Beams Under Pure Bending | |
| M. Kotełko | 229-251 |
| Durability of Brittle Material Subjected to Static Loads | |
| K. M. Mianowski | 253-259 |
| Polynomial Boundary Perturbation for Optimal Plastic Design of Heads of Plane Tension Members | |
| W. Egner | 261-281 |
| New Interpolation Functions in Eigen-Frequency Analysis of Timoshenko Beams on Two-Parameter Elastic Soil | |
| M. C. Bruno, V. Di Capua, C. Franciosi | 283-294 |
| A New Method of Finding Approximate Solutions of the Heat Conduction Equation | |
| Z. Turek | 295-301 |



