This list contains references from the content that can be linked to their source. For a full set of references and notes please see the PDF or HTML where available.
 M. Braun . On the applicability of the third integral of motion. J. Diff. Eq. 13 (1973), 300–318.
 R. Churchill , G. Pecelli & D. Rod . A survey of the Hénon-Heiles Hamiltonian with applications to related examples. In Lecture Notes in Physics 93 (1979) 76–136.
 E. Fontich . On integrability of quadratic area preserving mappings in the plane. In Lecture Notes in Physics 179 (1983), 270–271.
 J. Guckenheimer & P. Holmes . Nonlinear Oscillations, Dynamical Systems, and Bifurcations of Vector Fields. Springer: Berlin-Heidelberg-New York-Tokyo, 1983.
 F. G. Gustavson . On constructing formal integrals of a Hamiltonian system near an equilibrium point. Astron. J. 71 (1966), 670–686.
 M. Hénon & C. Heiles . The applicability of the third integral of motion, some numerical experiments. Astron. J. 69 (1964), 73–79.
 R. McGehee & K. Meyer . Homoclinic points of area preserving diffeomorphisms. Amer. J. Math. 96 (1974), 409–421.
 J. Moser . The analytical invariants of an area preserving mapping near a hyperbolic fixed point. Comm. Pure App. Math. 9 (1956), 673–692.
 J. Sanders . Melnikov's method and averaging. Cel. Mech. 28 (1982), 171–181.
 C. Siegel & J. Moser . Lectures on Celestial Mechanics. Springer: Berlin-Heidelberg-NewYork, 1971.