Commun. Korean Math. Soc. 2012; 27(4): 701-708
Printed December 1, 2012
https://doi.org/10.4134/CKMS.2012.27.4.701
Copyright © The Korean Mathematical Society.
Yun Sun Hwang and Sun Shin Ahn
Dongguk University, Dongguk University
© 2022. The Korean Mathematical Society. Powered by INFOrang Co., Ltd