@article{urn:eudml:doc:38458,
title = {A proof of universality of arc length as time parameter in Kepler problems.},
journal = {Extracta Mathematicae},
volume = {11},
year = {1996},
pages = {315-324},
zbl = {0905.70005},
mrnumber = {MR1437456},
language = {en},
url = {http://dml.mathdoc.fr/item/urn:eudml:doc:38458}
}
Floría, Luis. A proof of universality of arc length as time parameter in Kepler problems.. Extracta Mathematicae, Tome 11 (1996) pp. 315-324. http://gdmltest.u-ga.fr/item/urn:eudml:doc:38458/