@article{PPN236007467+dmdlog9, title = {Theoria motus corporum coelestium in sectionibus conicis Solem ambientium}, booktitle = {Astronomische Abhandlungen Bd. 6}, series = {GDML\_Books}, year = {1874}, pages = {53}, url = {http://dml.mathdoc.fr/item/PPN236007467+dmdlog9} }
(éd.). Theoria motus corporum coelestium in sectionibus conicis Solem ambientium, dans Astronomische Abhandlungen Bd. 6, GDML_Books, (1874), p. 53. http://gdmltest.u-ga.fr/item/PPN236007467+dmdlog9/