TY - JOUR AU - Yves Grandati AU - Christiane Quesne TI - Confluent Chains of DBT: Enlarged Shape Invariance and New Orthogonal Polynomials JO - Symmetry, integrability and geometry: methods and applications PY - 2015 VL - 11 UR - http://geodesic.mathdoc.fr/item/SIGMA_2015_11_a60/ LA - en ID - SIGMA_2015_11_a60 ER -