Journal of Approximation Theory
Journal of Approximation Theory > 2005 > 132 > 1 > 1-14
Journal of Approximation Theory > 2005 > 133 > 2 > 147-172
Journal of Approximation Theory > 2005 > 132 > 1 > 1-14
Journal of Approximation Theory > 2005 > 133 > 2 > 147-172