Models for quadratic algebras associated with second order superintegrable systems in 2D. Kalnins, Ernest G.; Miller, Willard jun.; Post, Sarah — 2008 SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only]
Tools for verifying classical and quantum superintegrability. Kalnins, Ernest G.; Kress, Jonathan M.; Miller, Willard jun. — 2010 SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only]
Structure theory for second order 2D superintegrable systems with 1-parameter potentials. Kalnins, Ernest G.; Kress, Jonathan M.; Jr., Willard Miller; Post, Sarah — 2009 SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only]