TY  - JOUR
AU  - Biggs, R. G.
TI  - A New Bound for Nil U-Rings
JO  - Canadian journal of mathematics
PY  - 1970
SP  - 403
EP  - 407
VL  - 22
IS  - 2
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1970-049-0/
DO  - 10.4153/CJM-1970-049-0
ID  - 10_4153_CJM_1970_049_0
ER  -