By Mustafa Rehana   Ahmed S.   Khan E. U.   in Chinese Physics Letters

ISSN:0256-307X|30|1|16101-16103

IOP Publishing‎(2013)‎

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By Zia A   Shah N A   Ahmed S   Khan E U   in Physica Scripta

ISSN:1402-4896|89|10|105802-105809

IOP Publishing‎(2014)‎

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By Zia Amir   Ahmed S   Shah N A   Khan E U   in Physica Scripta

ISSN:1402-4896|90|6|65503-65510

IOP Publishing‎(2015)‎

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