%0 Journal Article %A Yves Grandati %A Christiane Quesne %T Confluent Chains of DBT: Enlarged Shape Invariance and New Orthogonal Polynomials %J Symmetry, integrability and geometry: methods and applications %D 2015 %V 11 %U http://geodesic.mathdoc.fr/item/SIGMA_2015_11_a60/ %G en %F SIGMA_2015_11_a60