[Chen, S.L.] College of Mathematics and Statistics, Hengyang Normal University, Hengyang, 421008, China
[Mateljević, M.] University of Belgrade, Faculty of Mathematics, Studentski Trg 16, Belgrade, 11000, Serbia
[Ponnusamy, S.] Indian Statistical Institute, Chennai Centre, SETS, Chennai, 600113, India
[Wang, X.T.] Department of Mathematics, Shantou University, Shantou, 515063, China