Relativistic Toda chain with boundary interaction at root of unity. Iorgov, Nikolai, Roubtsov, Vladimir, Shadura, Vitaly, Tykhyy, Yuri (2007) SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only]
Revisiting the symmetries of the quantum Smorodinsky-Winternitz system in D dimensions. Quesne, Christiane (2011) SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only]