By Abourabia A M   Mahmoud M A   Khedr G M   in Canadian Journal of Physics

ISSN:1208-6045|86|12|1427-1435

NRC Research Press‎(2008)‎

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By Abourabia A. M.   Mahmoud M. A.   Khedr G. M.   in Canadian Journal of Physics

ISSN:1208-6045|87|6|675-684

NRC Research Press‎(2009)‎

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