%0 Journal Article %A Ravi A. Rao %T The Bass-Quillen conjecture in dimension three but characteristic ? 2,3 via a question of A. Suslin. %J Inventiones mathematicae %D 1988 %P 609-618 %V 93 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1988__93_2_143610/ %F IM_1988__93_2_143610