TY  - JOUR
AU  - Marc P. Thomas
TI  - The canonical test case for the 
    non-commutative Singer–Wermer conjecture
JO  - Studia Mathematica
PY  - 2009
SP  - 43
EP  - 63
VL  - 194
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.4064/sm194-1-3/
DO  - 10.4064/sm194-1-3
LA  - en
ID  - 10_4064_sm194_1_3
ER  -