TY  - JOUR
AU  - Turaev, Vladimir
TI  - A norm for the cohomology of 2–complexes
JO  - Algebraic and Geometric Topology
PY  - 2002
SP  - 137
EP  - 155
VL  - 2
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.2140/agt.2002.2.137/
DO  - 10.2140/agt.2002.2.137
ID  - 10_2140_agt_2002_2_137
ER  -