He is Professor emeritus at the Université libre de Bruxelles (ULB) where he is member of the Service de Physique Théorique.
==Glej tudi==* ACARS (Aircraft Communications Addressing and Reporting System)* Future Air Navigation System (FANS)* Aeronautical Telecommunication Network (ATN)* Flight Service Station (FSS)==Reference====Zunanje povezave==*Electronic US Domestic Flight Planning by Skytrex Systems - AvCaddy EFB*International Flight Planning Resource by Region*International Civil Aviation Organization*Federal Aviation Administration (US Government)*Aviation glossary*Centennial of Flight