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Iranian Journal of Science and Technology, Transactions A: Science > 2017 > 41 > 4 > 1165-1170
International Journal of Theoretical Physics > 2013 > 52 > 11 > 4015-4024
Astrophysics and Space Science > 2009 > 319 > 1 > 81-84
International Journal of Theoretical Physics > 2009 > 48 > 4 > 1019-1029
International Journal of Theoretical Physics > 2008 > 47 > 3 > 634-639