%0 Journal Article %A Grekos, Georges %T Extremal problems about additive bases %J Communications in Mathematics %D 1998 %P 87-92 %V 06 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/COMIM_1998__6_1_a10/ %G en %F COMIM_1998__6_1_a10