Commun. Korean Math. Soc. 2007; 22(4): 487-491
Printed December 1, 2007
Copyright © The Korean Mathematical Society.
Yi lmaz Ceven, Mehmet Ali
Suleyman Demirel University, Cumhuriyet University
2016; 31(2): 209-216
2000; 15(3): 469-479
2010; 25(1): 1-9
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