Problems of Control and Information Theory 18. (Budapest, 1989)
1989 / 1. szám
VOL. ТОМ18 NUMBER НОМЕР1 М 6.320 Academy of sciences of the ussr HUNGARIAN ACADEMY OF SCIENCES CZECHOSLOVAK ACADEMY OF SCIENCES АКАДЕМИЯ НАУК СССР 1989 ВЕНЕЕРСКАЯ АКАДЕМИЯ НАУК ЧЕХОСЛОВАЦКАЯ АКАДЕМИЯ НАУК AKADÉMIAI KIADÓ, BUDAPEST DISTRIBUTED OUTSIDE THE COMECON-COUNTRIES BY PERGAMON PRESS, OXFORD