Commun. Korean Math. Soc. 2014; 29(3): 463-478
Printed July 1, 2014
https://doi.org/10.4134/CKMS.2014.29.3.463
Copyright © The Korean Mathematical Society.
Ali S. Janfada
Urmia University
2015; 30(3): 269-276
© 2022. The Korean Mathematical Society. Powered by INFOrang Co., Ltd