1. On the problem of two fixed centers and certain of its generalizations;Hiltebeitel;Am. J. Math.,1911
2. A Treatise on the Analytical Dynamics of Particles and Rigid Bodies;Whittaker,1937
3. Kepler Problem by Descent from the Euler Problem;Wheeler,1995
4. Integrable systems in celestial mechanics;Mathúna;Progress in Mathematical Physics,2008
5. The painlevé analysis and construction of solutions for the generalized Hénon-Heiles system, Order and Chaos in Stellar and Planetary Systems;Timoshkova;Astron. Soc. Pac. Conf.,2004