- Chris Athorne, “Fundamental principles of classical mechanics: a geometrical perspective”, Contemporary Physics, 57, no. 2, 2016, 238

- Jinbing Chen, “Neumann Type Integrable Reduction to the Negative-Order Coupled Harry–Dym Hierarchy”, J. Phys. Soc. Jpn., 87, no. 10, 2018, 104004

- Esteban Calzetta, Juan José Gonzalez, “Chaos and semiclassical limit in quantum cosmology”, Phys. Rev. D, 51, no. 12, 1995, 6821

- Vladimir Dragović, Milena Radnović, “Periods of Pseudo-Integrable Billiards”, Arnold Math J., 1, no. 1, 2015, 69

- You-Liang Gu, Yangsheng Xu, 1, Proceedings of IEEE International Conference on Systems, Man and Cybernetics, 1994, 958

- Jean Avan, Antal Jevicki, “Algebraic structures and eigenstates for integrable collective field theories”, Commun.Math. Phys., 150, no. 1, 1992, 149

- R S MacKay, Hamiltonian Dynamical Systems, 2020, 137

- O E Orel, “A criterion for orbital equivalence of integrable Hamiltonian systems in the vicinity of elliptic orbits. An orbital invariant in the Lagrange problem”, Sb. Math., 188, no. 7, 1997, 1085

- Jacques Lafontaine, An Introduction to Differential Manifolds, 2015, 273

- Ángel L. Corps, Armando Relaño, “Long-range level correlations in quantum systems with finite Hilbert space dimension”, Phys. Rev. E, 103, no. 1, 2021, 012208
