Bull. Korean Math. Soc. 2006; 43(1): 161-168
Printed March 1, 2006
Copyright © The Korean Mathematical Society.
Indrajit Lahiri and Rupa Pal
University of Kalyani, University of Kalyani
2007; 44(4): 607-622
2018; 55(2): 469-478
2015; 52(2): 345-350
2015; 52(1): 13-33
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