Institute for Information Transmission Problems (Kharkevich Institute), Russian Academy of Sciences, Bolshoi Karetnyi per. 19, Building 1, Moscow, 127051, Russia. rubanov@iitp.ru.|Institute for Information Transmission Problems (Kharkevich Institute), Russian Academy of Sciences, Bolshoi Karetnyi per. 19, Building 1, Moscow, 127051, Russia.|Institute for Information Transmission Problems (Kharkevich Institute), Russian Academy of Sciences, Bolshoi Karetnyi per. 19, Building 1, Moscow, 127051, Russia.|Institute for Information Transmission Problems (Kharkevich Institute), Russian Academy of Sciences, Bolshoi Karetnyi per. 19, Building 1, Moscow, 127051, Russia.