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Astrophysics and Space Science > 2009 > 323 > 1 > 17-40
Astrophysics and Space Science > 2008 > 317 > 3-4 > 153-161
Astrophysics and Space Science > 2005 > 298 > 1-2 > 191-196
Journal of Computational and Applied Mathematics > 1999 > 109 > 1-2 > 123-152