1. G. N. Watson, A Treatise on the Theory of Bessel Functions, Cambridge University Press, 1995.
2. J. F. Carinena, M. F. Ranada and M. Santander, The quantum free particle on spherical and hyperbolic spaces: A curvature dependent approach, J. Math. Phys., 52, 072104, 2011.
3. Throughout this article, I have tacitly assumed that the reader has some familiarity with the notion of integrability in the context of classical Hamiltonian dynamics. For the aspects of the topic that are relevant to the context and purpose at hand, see, for instance, Refs. [4] and [5] below.
4. M. Tabor, Chaos and Integrability in Nonlinear Dynamics: An Introduction, Wiley, 1989.
5. V. Balakrishnan, Suresh Govindarajan and S. Lakshmibala, The central force problem in n dimensions, Resonance, Vol.25, No.4, pp.513–538, 2020.