%0 Journal Article %A Dugger, Daniel %A Isaksen, Daniel C. %T Algebraic $K$-theory and sums-of-squares formulas %J Documenta mathematica %D 2005 %P 357-366 %V 10 %I mathdoc %U http://geodesic.mathdoc.fr/item/DOCMA_2005__10__a9/ %G en %F DOCMA_2005__10__a9