Applied Mathematics and Computation
Applied Mathematics and Computation > 2012 > 219 > 3 > 1031-1039
Applied Mathematics and Computation > 2012 > 219 > 3 > 892-898
Applied Mathematics and Computation > 2012 > 219 > 3 > 1031-1039
Applied Mathematics and Computation > 2012 > 219 > 3 > 892-898