Lyubomir T. GRUYITCH was Full Professor at the University of technology Belfort - Montbeliard, Belfort, France; University of Natal, South Africa and University of Belgrade, Serbia. He was invited Notre Dame University, South Bend, IN, USA and elected Visiting Professor at Louisiana State University, Baton Rouge, LA. Dr. Gruyitch published 17 books (14 in English, 3 in Serb), 4 textbooks (in Serb), 11 lecture notes (7 in French, 2 in English, 2 in Serb), one manual of solved control problems, one book translation from Russian, chapters in six scientific books and in two encyclopedias, 294 scientific papers in scientific journals, 176 conference research papers. Among them, three books published in USA and two in Canada-USA, are on time and relativity theory. Other books are on control and dynamic systems.Dr.

Gruyitch gave invited university talks in Belgium, Canada, England, France, Russia, Serbia, Tunis, and USA.He was invited plenary sessions speaker, organizer and/or chairman of invited sessions at international conferences, and President of the International Program Committee of the IFAC - IFIP - IMACS Conference: Control of Industrial Systems, Belfort, France (more than 300 participants from 42 countries). City of Belgrade awarded Lyubomir Gruyitch for the achieved score at the First Belgrade pupil's competition in mathematics (1958). He gained the first prize at the competition for the best fiction literary text, The First Belgrade High School (1958). Belgrade University awarded junior Gruyitch for the excellent exam score (1960). Mr. Gruyitch won the first place at the Yugoslav competition organized by Slovenian industry "Iskra" (1971) for the best M. Sc.

thesis. French Republic honored Professor Grujic (Gruyitch) Doctor Honoris Causa of the University of Science and \engineering, Lille I, for scientific and educational contributions to Systems Science and Control Theory (1984). Association of Serbia for Systems, Automatic Control and Measurement (SAUM) honored Professor Gruyitch Distinguished and Honorary Member (1989). The highest honor by the Faculty of Mechanical Engineering (FME), University of Belgrade, Serbia, 1997.