Bull. Korean Math. Soc. 2017; 54(3): 967-973
Online first article April 12, 2017 Printed May 31, 2017
https://doi.org/10.4134/BKMS.b160412
Copyright © The Korean Mathematical Society.
Shaoqiang Deng and Xingda Liu
Nankai University, Chongqing University of Technology
2013; 50(5): 1683-1691
2019; 56(4): 841-852
2019; 56(1): 201-217
2016; 53(4): 1087-1094
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