Journal of Astrophysics and Astronomy
Journal of Astrophysics and Astronomy > 2012 > 33 > 4 > 387-397
Journal of Astrophysics and Astronomy > 2012 > 33 > 4 > 399-416
Journal of Astrophysics and Astronomy > 2012 > 33 > 4 > 375-386
Journal of Astrophysics and Astronomy > 2012 > 33 > 4 > 363-373