Problems of Control and Information Theory 10. (Budapest, 1981)
1981 / 1. szám
'\Л& i п * NUMBER 1 ^ Т» том X v7 * НОМЕР 1 ACADEMY OF SCIENCES OF THE USSR -^HUNGARIAN ACADEMY OF SCIENCES > CZECHOSLOVAK ACADEMY OF SCIENCES АКАДЕМИЯ НАУК СССР ВЕНГЕРСКАЯ АКАДЕМИЯ НАУК ЧЕХОСЛОВАЦКАЯ АКАДЕМИЯ НАУК AKADÉMIAI KIADÓ, BUDAPEST DISTRIBUTED OUTSIDE THE COMECON-COUNTRIES BY PERGAMON PRESS, OXFORD