@article{PPN236020595+dmdlog20, title = {3. GAUSS an SCHUMACHER, 1S36 April 23}, booktitle = {Nachtraege zur Physik, Chronologie und Astronomie Bd.11, Abt.1}, series = {GDML\_Books}, year = {1927}, pages = {24}, url = {http://dml.mathdoc.fr/item/PPN236020595+dmdlog20} }
(éd.). 3. GAUSS an SCHUMACHER, 1S36 April 23, dans Nachtraege zur Physik, Chronologie und Astronomie Bd.11, Abt.1, GDML_Books, (1927), p. 24. http://gdmltest.u-ga.fr/item/PPN236020595+dmdlog20/