@article{1183492924, author = {Rawles, T. H.}, title = {Two classes of periodic orbits with repelling forces}, journal = {Bull. Amer. Math. Soc.}, volume = {34}, number = {6}, year = {1928}, pages = { 618-630}, language = {en}, url = {http://dml.mathdoc.fr/item/1183492924} }
Rawles, T. H. Two classes of periodic orbits with repelling forces. Bull. Amer. Math. Soc., Tome 34 (1928) no. 6, pp. 618-630. http://gdmltest.u-ga.fr/item/1183492924/