%0 Journal Article %A S. Sahi %T Raising and Lowering Operators for Askey–Wilson Polynomials %J Symmetry, integrability and geometry: methods and applications %D 2007 %V 3 %U http://geodesic.mathdoc.fr/item/SIGMA_2007_3_a1/ %G en %F SIGMA_2007_3_a1