Volume 7, Issue 3, July 2021, Pages 607-616
10.22059/poll.2021.319721.1027
Vijai Krishna; Anil Kumar Pandey; Pankaj Kumar Gupta
Volume 6, Issue 4, December 2020, Pages 785-799
10.22059/poll.2020.299746.767
M.N. Rashed; M. A. El Taher; S. M. M. Fadlalla
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