On the mechanics with noncontinuous hamiltonians Kondracki, W.; Kozak, M. — 1984 Proceedings of the 12th Winter School on Abstract Analysis
Quantum spaces: notes and comments on a lecture by S. L. Woronowicz R. Budzyński; W. Kondracki — 1995 Banach Center Publications
The density problem for infinite dimensional group actions S. Klimek; W. Kondracki; W. Oledzki; P. Sadowski — 1988 Compositio Mathematica