@article{PPN236020595+dmdlog79, title = {9. GAUSS an ENCKE, 1833 August 20}, booktitle = {Nachtraege zur Physik, Chronologie und Astronomie Bd.11, Abt.1}, series = {GDML\_Books}, year = {1927}, pages = {85}, url = {http://dml.mathdoc.fr/item/PPN236020595+dmdlog79} }
(éd.). 9. GAUSS an ENCKE, 1833 August 20, dans Nachtraege zur Physik, Chronologie und Astronomie Bd.11, Abt.1, GDML_Books, (1927), p. 85. http://gdmltest.u-ga.fr/item/PPN236020595+dmdlog79/