TY  - JOUR
AU  - L. N. Vaserstein
TI  - The congruence problem for a unitary group of rank $\ge2$
JO  - Sbornik. Mathematics
PY  - 1968
SP  - 351
EP  - 355
VL  - 5
IS  - 3
UR  - http://geodesic.mathdoc.fr/item/SM_1968_5_3_a2/
LA  - en
ID  - SM_1968_5_3_a2
ER  -