Andrey Garnaev Department of Computer Modelling and Multiprocessor Systems, Faculty of Applied Mathematics and Control Processes, St Petersburg State University   Universitetskii prospekt 35, Peterhof St Petersburg, 198504 Russia   agarnaev@rambler.ru   http://www.apmath.spbu.ru/~kmms/garnaev/default.htm           JEL Areas: C7 : Game Theory and Bargaining Theory:General C6 : Mathematical Methods and Programming: General