Bull. Korean Math. Soc. 2015; 52(2): 453-465
Printed March 31, 2015
https://doi.org/10.4134/BKMS.2015.52.2.453
Copyright © The Korean Mathematical Society.
Lijuan Liu, Wei Wang, and Qingzhong Huang
Shanghai University, Hunan University of Science and Technology, Jiaxing University
2018; 55(1): 139-148
2014; 51(4): 1023-1029
2014; 51(1): 129-137
1999; 36(4): 771-778
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