1. Yulin Normal University Yulin 537000 China
2. South Ural State University, 76, Lenin Aven. Chelyabinsk 454080 Russia
3. Group of Modern Computational Methods Ural Federal University, 620002, 19 Mira st. Ekaterinburg Russian
4. Fed, Section of Mathematics, Department of Civil Engineering Democritus University of Thrace Xanthi Greece
5. Department of Electrical and Electronic Engineering microSENSES Laboratory Athens Greece