- LI-CHIN YEH, YI-CHIUAN CHEN, ING-GUEY JIANG, “CHAOTIC ORBITS IN A PLANAR THREE-CENTER PROBLEM OF SLIGHTLY NEGATIVE ENERGY”, Int. J. Bifurcation Chaos, 22, no. 12, 2012, 1230040
- Furong Zhao, Zhiqiang Wang, “Action Minimizing Orbits in the 2-Center Problems with Simple Choreography Constraint”, Few-Body Syst, 63, no. 4, 2022, 78
- Nicola Soave, “Symbolic dynamics: from the N-centre to the (N + 1)-body problem, a preliminary study”, Nonlinear Differ. Equ. Appl., 21, no. 3, 2014, 371