@article{GDZPPN002094096,
title = {Collision Orbits in the Anisotropic Kepler Problem.},
journal = {Inventiones mathematicae},
volume = {46},
year = {1978},
pages = {221-252},
zbl = {0382.58015},
url = {http://dml.mathdoc.fr/item/GDZPPN002094096}
}
Devaney, Robert L. Collision Orbits in the Anisotropic Kepler Problem.. Inventiones mathematicae, Tome 46 (1978) pp. 221-252. http://gdmltest.u-ga.fr/item/GDZPPN002094096/