Affiliation: | 1.Department of Mathematics Sciences, Soochow University, Suzhou, 215006, China ;2.School of Engineering Science, Lappeenranta–Lahti University of Technology, Lappeenranta, Finland ;3.Interdisciplinary Center for Scientific Computing (IWR) and Mathematics Center Heidelberg (MATCH), Heidelberg University, Mathematikon, Im Neuenheimer Feld 205, 69120, Heidelberg, Germany ; |