1 Research Center for Complex Systems and Network Sciences and Department of Mathematics, Southeast University, Nanjing 210096, China ; Department of Mathematics, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
2 China Electric Power Research Institute, Nanjing 210003, China.
3 Research Center for Complex Systems and Network Sciences and Department of Mathematics, Southeast University, Nanjing 210096, China.
4 Research Center for Complex Systems and Network Sciences and Department of Mathematics, Southeast University, Nanjing 210096, China ; School of Electrical and Computer Engineering, RMIT University, Melbourne, VIC 3001, Australia.
5 School of Electrical and Computer Engineering, RMIT University, Melbourne, VIC 3001, Australia.
6 Department of Mathematics, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia.