@misc{_List,
 howpublished={online},
 publisher={Warszawa: Wydawnictwa Czasopism Technicznych},
 language={eng},
 type={czasopismo},
 title={List of Participants: Fourth Congress of the International Federation of Automatic Control, Warszawa 16-21 June 1969},
 keywords={konferencje, International Federation of Automatic Control (IFAC), automatyka, Fourth Congress of the International Federation of Automatic Control},
}