AEG Research
Frankfurt - Niederrad
Centre d'Etudes Nucléaires de Saclay
Gif - Sur - Yvette
Companie Générale de Télégraphie sans Fil
Orsay
Laboratoire Joliot-Curie de Physique Nucléaire
Orsay
Philips Research Laboratories
Eindhoven
Rutherford High Energy Laboratory
Didcot
University of Birmingham
Birmingham
University of California
Davis, California
University of Colorado
Boulder, Colorado
University of Maryland
College Park
University of Michigan
Ann Arbor, Michigan