Bull. Korean Math. Soc. 2002; 39(1): 33-41
Printed March 1, 2002
Copyright © The Korean Mathematical Society.
In Ho Jeon, Se Hee Kim, Eungil Ko, and Ji Eun Park
Ewha Women's University, Ewha Women's University, Ewha Women's University, Ewha Women's University
2014; 51(2): 357-371
2002; 39(4): 571-575
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