TY - JOUR AU - B.A. Magurn AU - W. Van der Kallen TI - Absolute stable rank and Witt cancellation for noncommutative rings. JO - Inventiones mathematicae PY - 1988 SP - 525 EP - 542 VL - 91 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IM_1988__91_3_143553/ ID - IM_1988__91_3_143553 ER -