%0 Journal Article %A Hong Bing Yu %T The number of $k$-sums of abelian groups of order $k$ %J Acta Arithmetica %D 2004 %P 103-107 %V 112 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa112-2-1/ %R 10.4064/aa112-2-1 %G en %F 10_4064_aa112_2_1