Institution: | 1. Mathematical Institute, Silesian University in Opava, Na Rybní?ku 1, 746 01 Opava, Czech Republic. Hynek.Baran@math.slu.cz;2. josephkra@gmail.com;3. Petr.Vojcak@math.slu.cz;4. Petr.Vojcak@math.slu.cz;5. Independent University of Moscow, B. Vlasevsky 11, 119002 Moscow, Russia;6. Faculty of Applied Mathematics, AGH University of Science and Technology, Al. Mickiewicza 30, Kraków 30-059, Poland. morozov@agh.edu.pl |