Soukenka, Martin: On a dynamics in rational polygonal billiards.
(English).
In:
Chleboun, J., Přikryl, P., Segeth, K.
and Šístek, J. (eds.): Programs and Algorithms of Numerical Mathematics.
Proceedings of Seminar. Dolní Maxov, June 6-11, 2010.
Institute of Mathematics AS CR, Prague, 2010.
pp. 177-182