Journal of Computational and Applied Mathematics
Journal of Computational and Applied Mathematics > 2001 > 133 > 1-2 > 579-591
Journal of Computational and Applied Mathematics > 2001 > 133 > 1-2 > 623-633
Journal of Computational and Applied Mathematics > 2003 > 153 > 1-2 > 463-475
Journal of Computational and Applied Mathematics > 2007 > 207 > 2 > 214-226