MMA2009 P.Code=TrofV ===============------------------------------ First Name =Vyacheslav Last Name =Trofimov Title =Prof. Institution =Lomonosov Moscow State University Street Address =Leninskie Gory City =Moscow State =Russia Zip Code =119992 Telephone =+7 (495) 9395255 FAX =+7 (495) 9392596 E-mail =vatro@cs.msu.su URL = Title of talk and AMS Subject Classification=