@article{05909797, title = {A recurrence relation approach to higher order quantum superintegrability.}, journal = {SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only]}, volume = {7}, year = {2011}, doi = {10.3842/SIGMA.2011.031}, zbl = {1217.81105}, language = {en}, url = {http://dml.mathdoc.fr/item/05909797} }
Kalnins, Ernie G.; Kress, Jonathan M.; Miller, Willard jun. A recurrence relation approach to higher order quantum superintegrability.. SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only], Tome 7 (2011) . doi : 10.3842/SIGMA.2011.031. http://gdmltest.u-ga.fr/item/05909797/