1. State Key Laboratory for Geomechanics and Deep Underground EngineeringChina University of Mining and Technology Xuzhou China
2. School of Mechanics and Civil EngineeringChina University of Mining and Technology Xuzhou China
3. College of Mathematics and Systems ScienceShandong University of Science and Technology Qingdao China
4. Engineering School, DEIMTuscia University Viterbo Italy
5. Science Faculty, Department of MathematicsFirat University Elazig Turkey