Bull. Korean Math. Soc. 2010; 47(3): 491-502
Printed May 1, 2010
https://doi.org/10.4134/BKMS.2010.47.3.491
Copyright © The Korean Mathematical Society.
Madjid Eshaghi Gordji
Semnan University
© 2022. The Korean Mathematical Society. Powered by INFOrang Co., Ltd