Manuel F. Rañada, Mariano Santander, “On harmonic oscillators on the two-dimensional sphere S2 and the hyperbolic plane H2”, Journal of Mathematical Physics, 43, no. 1, 2002, 431
Maciej Błaszak, Krzysztof Marciniak, “On Reciprocal Equivalence of Stäckel Systems”, Stud Appl Math, 129, no. 1, 2012, 26
Andrey V. Tsiganov, “The Kepler Problem: Polynomial Algebra of Nonpolynomial First Integrals”, Regul. Chaot. Dyn., 24, no. 4, 2019, 353
Valery Vasil'evich Kozlov, “Об устойчивости равновесий в псевдоримановом пространстве”, Успехи математических наук, 80, no. 1(481), 2025, 59
S. Gravel, “Superintegrable Systems with Third-Order Integrals in Classical and Quantum Mechanics”, Theoretical and Mathematical Physics, 137, no. 1, 2003, 1439