Bifurcations and Enumeration of Classes of Relative Equilibria in the Planar Restricted Four-Body Problem

@article{Barros2014BifurcationsAE,
  title={Bifurcations and Enumeration of Classes of Relative Equilibria in the Planar Restricted Four-Body Problem},
  author={Jean F. Barros and Eduardo S. G. Leandro},
  journal={SIAM J. Math. Analysis},
  year={2014},
  volume={46},
  pages={1185-1203}
}