Professor of Physics, University of Maryland

Universitat de les Illes Balears

Universitat de les Illes Balears, Spain

Institute of Space Science

Physics and Astronomy, University of British Columbia

Emeritus Professor of Applied Mathematics, University of Cape Town; FRS

astronomer, Technische Universität Dresden

Chandigarh University

Invertis University, Bareilly

laboratoire Kastler Brossel, Ecole Normale superieure, Paris, France