1. Group of Modern Computational Methods Ural Federal University Yekaterinburg Russia Federation
2. Department of Economics, Division of Mathematics and Informatics National and Kapodistrian University of Athens Athens Greece
3. Digital Industry REC South Ural State University Chelyabinsk Russia
4. Data Recovery Key Laboratory of Sichun Province Neijing Normal University Neijiang China
5. Section of Mathematics, Department of Civil Engineering Democritus University of Thrace Xanthi Greece