J. Korean Math. Soc. 1996; 33(1): 81-87
Printed March 1, 1996
Copyright © The Korean Mathematical Society.
Kyung Hee Kim, June Bok Lee, and Young H. Park
Yonsei University, Yonsei University, and Kangwon National University
© 2022. The Korean Mathematical Society. Powered by INFOrang Co., Ltd