Commun. Korean Math. Soc. 2007; 22(3): 429-440
Printed September 1, 2007
Copyright © The Korean Mathematical Society.
Shaban Sedghi Ghadikolaee, Nabi Shobe
Islamic Azad University, Islamic Azad University
2013; 28(3): 517-526
2009; 24(4): 581-594
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