Quadratic algebra approach to an exactly solvable position-dependent mass Schrödinger equation in two dimensions. Quesne, Christiane (2007) SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only]
Quantum Affine Algebras and Deformations of the Virasoro and 𝒲 -Algebras Edward Frenkel, Nikolai Reshetikhin (1995) Recherche Coopérative sur Programme n°25
Quantum integrable model of an arrangement of hyperplanes. Varchenko, Alexander (2011) SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only]