1. Group of Modern Computational MethodsUral Federal University 620002, 19 Mira Street Yekaterinburg Russian Federation
2. Data Recovery Key Laboratory of Sichuan Province, College of Mathematics and Information ScienceNeijiang Normal University Neijiang 641100 P.R. China
3. Department of Automation EngineeringTEI of Sterea Hellas GR34400 Psahna Greece