@article{GDZPPN002104997,
title = {Absolute stable rank and Witt cancellation for noncommutative rings.},
journal = {Inventiones mathematicae},
volume = {93},
year = {1988},
pages = {525-542},
zbl = {0639.16015},
url = {http://dml.mathdoc.fr/item/GDZPPN002104997}
}
Magurn, B.A.; Van der Kallen, W. Absolute stable rank and Witt cancellation for noncommutative rings.. Inventiones mathematicae, Tome 93 (1988) pp. 525-542. http://gdmltest.u-ga.fr/item/GDZPPN002104997/