@article{GDZPPN001173456, title = {The Convergence Rates of Expansions in Jacobi Polynomials.}, journal = {Numerische Mathematik}, volume = {26}, year = {1976}, pages = {219-226}, zbl = {0345.65007}, url = {http://dml.mathdoc.fr/item/GDZPPN001173456} }
Delves, L.M.; Bain, M. The Convergence Rates of Expansions in Jacobi Polynomials.. Numerische Mathematik, Tome 26 (1976) pp. 219-226. http://gdmltest.u-ga.fr/item/GDZPPN001173456/