Professor Sergei S. Vinogradov holds the post of Leading Scientist at the Institute of Radiophysics and Electronics, Kharkov, Ukraine.
Paul D. Smith is Professor of Applied Mathematics at the University of Dundee, Scotland.
Dr. Elena D. Vinogradova is also at the University of Dundee as a Visiting Scientist from the Institute of Radiophysics and Electronics, Kharkov, Ukraine.