@article{PPN236008730+dmdlog18, title = {Sectio IV. De determinatione orbitarum, habita ratione perturbationum}, booktitle = {Theoretische Astronomie Bd. 7}, series = {GDML\_Books}, year = {1906}, pages = {258}, url = {http://dml.mathdoc.fr/item/PPN236008730+dmdlog18} }
(éd.). Sectio IV. De determinatione orbitarum, habita ratione perturbationum, dans Theoretische Astronomie Bd. 7, GDML_Books, (1906), p. 258. http://gdmltest.u-ga.fr/item/PPN236008730+dmdlog18/