%0 Journal Article %A Jörg Brüdern %T Ternary additive problems of Waring's type. %J Mathematica Scandinavica %D 1991 %P 27-45 %V 68 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MS2_1991__68_1_167144/ %F MS2_1991__68_1_167144