1. Aulbach, B., Kieninger, B.: On three definitions of chaos. Nonlinear Dyn. Syst. Theory 1, 23–37 (2001)
2. Craig, S., Diacu, F., Lacomba, E., Pérez, E.: On the anisotropic Manev problem. J. Math. Phys. 40, 1359–1375 (1999)
3. Danforth, C.M.: Chaos in an atmosphere hanging on a wall. Mathematics of Planet Earth. http://mpe.dimacs.rutgers.edu/2013/03/17/chaos-in-an-atmosphere-hanging-on-a-wall/ (2013)
4. Delgado, J., Diacu, F., Lacomba, E., Mingarelli, A., Mioc, V., Pérez, E., Stoica, C.: The global flow of the Manev problem. J. Math. Phys. 37, 2748–2761 (1996)
5. Devaney, R.L.: An Introduction to Chaotic Dynamical Systems. The Benjamin/Cummings Publishing Co., Inc, Menlo Park (1985). xiv+320 pp