@article{PPN236020595+dmdlog121, title = {8. GAUSS an OLBERS, 1813 September 13}, booktitle = {Nachtraege zur Physik, Chronologie und Astronomie Bd.11, Abt.1}, series = {GDML\_Books}, year = {1927}, pages = {150}, url = {http://dml.mathdoc.fr/item/PPN236020595+dmdlog121} }
(éd.). 8. GAUSS an OLBERS, 1813 September 13, dans Nachtraege zur Physik, Chronologie und Astronomie Bd.11, Abt.1, GDML_Books, (1927), p. 150. http://gdmltest.u-ga.fr/item/PPN236020595+dmdlog121/