Commun. Korean Math. Soc. 2009; 24(4): 581-594
Printed December 1, 2009
https://doi.org/10.4134/CKMS.2009.24.4.581
Copyright © The Korean Mathematical Society.
Shaban Sedghi, Duran Turkoglu, and Nabi Shobe
Islamic Azad University-Ghaemshar Branch, Gazi University, and Islamic Azad University-Babol Branch
2013; 28(3): 517-526
2007; 22(3): 429-440
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