Applied Mathematics and Computation
Applied Mathematics and Computation > 2006 > 180 > 1 > 376-392
Applied Mathematics and Computation > 2006 > 181 > 1 > 685-693
Applied Mathematics and Computation > 2006 > 180 > 1 > 376-392
Applied Mathematics and Computation > 2006 > 181 > 1 > 685-693