@book{PPN589855506,
title = {Methode der kleinsten Quadrate. - Fehlertheoretische Untersuchungen Bd. 2},
series = {GDML\_Books},
publisher = {D\"ummler},
address = {Berlin},
year = {1888},
language = {de},
url = {http://dml.mathdoc.fr/item/PPN589855506}
}
Encke, Johann Franz. Methode der kleinsten Quadrate. - Fehlertheoretische Untersuchungen Bd. 2. GDML_Books (1888), http://gdmltest.u-ga.fr/item/PPN589855506/