J. Korean Math. Soc. 1996; 33(2): 333-346
Printed June 1, 1996
Copyright © The Korean Mathematical Society.
Jong-Yeoul Park, Young-Chel Kwun, and Jin-Mun Jeong
Pusan National University, Dong-A University, and Pusan National University of Technology
2018; 55(3): 749-761
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