Professor V.P. Shestopalov received his Doctor of Science degree from Kharkov University in 1962. He is an Academician of the National Academy of Sciences of Ukraine and Honorary Chairman of the Kharkov Institute of Radiophysics and Electronics. He is the author of ten books and over 300 journal articles on theoretical and mathematical physics, diffraction theory, diffraction electronics and in other fields of theoretical electromagnetics. He is a Vice-President of the Ukrainian Branch of the International Union of Radio Science.Professor Y.V. Shestopalov is Head of the Department of Computer Science at Moscow State University. He obtained his Doctor of Science degree from Moscow University in 1988. He has published two books and over 50 journal articles on mathematical methods in electromagnetics and diffraction theory. He is a member of the IEEE, an Associate Editor of Advances in Radio Science and Electromagnetic Waves and Scientific Editor of Electromagnetic Waves.