%0 Journal Article %A Markus Rost %T On Quadratic forms isotropic over the function field of a comic. %J Mathematische Annalen %D 1990 %P 511-514 %V 288 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAN_1990__288_1_164747/ %F MAN_1990__288_1_164747