1. Lecture Notes in Mathematics;R. Azencott,1970
2. Bartoszek, W.: On concentration functions on discrete groups, Annals of Probability23 (1994), 1596?1599
3. Bartoszek, W.: On concentrated probabilities, to appear in Annales Polonici Mathematici, preprint,14 pages
4. Bartoszek, W.: On convolution powers on semidirect products, to appear in Israel Journal of Math., preprint,7 pages
5. Lecture Notes in Mathematics;P. Bougerol,1979