Bull. Korean Math. Soc. 2019; 56(1): 103-110
Online first article September 10, 2018 Printed January 31, 2019
https://doi.org/10.4134/BKMS.b180130
Copyright © The Korean Mathematical Society.
Reza Nekooei, Zahra Pourshafiey
Shahid Bahonar University of Kerman; Shahid Bahonar University of Kerman
2023; 60(2): 475-484
2019; 56(2): 439-450
2005; 42(1): 87-92
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