Authors
Bilender P. Allahverdiev
Department of Mathematics, Khazar University, Baku, Azerbaijan and Research Center of Econophysics, UNEC-Azerbaijan State University of Economics, Baku, Azerbaijan
Hüseyin Tuna
Department of Mathematics, Mehmet Akif Ersoy University, Burdur, Turkey and Research Center of Econophysics, UNEC-Azerbaijan State University of Economics, Baku, Azerbaijan