From September 1998 to February 1999, he was a Visiting Scholar with the Department of Electrical and Computer Engineering of University of New Mexico, Albuquerque, NM, USA. His research interests include statistical control, robust control, control of communication networks, control of nuclear fusion devices, control of aerospace systems. He was a member of the International Program Committee of the 42nd IEEE Conference on Decision and Control held in December 2003. He has published about 90 journal papers, conference papers, articles in books and encyclopedias.