@article{GDZPPN002269171, title = {Additive Theorie der Zahlk\"orper. II.}, journal = {Mathematische Annalen}, volume = {90}, year = {1923}, pages = {184-210}, zbl = {49.0128.01}, url = {http://dml.mathdoc.fr/item/GDZPPN002269171} }
Siegel, C.L. Additive Theorie der Zahlkörper. II.. Mathematische Annalen, Tome 90 (1923) pp. 184-210. http://gdmltest.u-ga.fr/item/GDZPPN002269171/