%0 Journal Article %A T Estermann %T On Waring's problem for fourth and higher powers %J Acta Arithmetica %D 1936 %P 197-211 %V 2 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-2-2-197-211/ %R 10.4064/aa-2-2-197-211 %G en %F 10_4064_aa_2_2_197_211