@article{GDZPPN002075474, title = {Die Renaissance der Himmelsmechanik.}, journal = {Elemente der Mathematik}, volume = {19}, year = {1964}, pages = {97-106}, zbl = {0128.41305}, url = {http://dml.mathdoc.fr/item/GDZPPN002075474} }
Stiefel, E. Die Renaissance der Himmelsmechanik.. Elemente der Mathematik, Tome 19 (1964) pp. 97-106. http://gdmltest.u-ga.fr/item/GDZPPN002075474/