He was a good friend and an outstanding scientist in many fields, for instance, a leading expert in Plasticity, Continuum Mechanics, Strength of Materials, Creep and Damage Mechanics, to name but a few.

I was glad to discuss with Michał both of on International Conferences and in letters about future trends in Theoretical and Applied Mechanics or new directions of Research. This scientific exchange was very useful for my own work. I will never forget Michal,



Univ. Prof. Dr ing. J. Betten

Aachen , June , 26, 2006