@article{GDZPPN002366509, title = {Zum Waring'schen problem}, journal = {Mathematische Zeitschrift}, volume = {14}, year = {1922}, pages = {219-247}, zbl = {48.0142.05}, url = {http://dml.mathdoc.fr/item/GDZPPN002366509} }
Landau, E. Zum Waring'schen problem. Mathematische Zeitschrift, Tome 14 (1922) pp. 219-247. http://gdmltest.u-ga.fr/item/GDZPPN002366509/