Zhirayr Avetisyan is a research fellow at the Ghent Analysis and PDE Center at Ghent University, Belgium.
Michael Ruzhansky is a senior full professor of mathematics and director of the Ghent Analysis and PDE Center at Ghent University, Belgium. He is also a professor of mathematics at Queen Mary University of London, United Kingdom.
Armen Vagharshakyan is a senior researcher at the Institute of Mathematics, Armenian National Academy of Sciences, Armenia.