ru %D0%9F%D1%80%D0%BE%D0%B5%D0%BA%D1%82:%D0%A2%D0%B5%D0%BC%D0%B0%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B0%D1%8F %D0%BD%D0%B5%D0%B4%D0%B5%D0%BB%D1%8F %D0%9A%D0%BE%D0%BD%D1%82%D0%B5, %D0%98%D0%B1%D1%80%D0%B0%D0%B8%D0%BC%D0%B0 (%D1%84%D1%83%D1%82%D0%B1%D0%BE%D0%BB%D0%B8%D1%81%D1%82, 1981)