TY  - JOUR
AU  - Krouglov, Vladimir
TI  - The curvature of contact structures on 3–manifolds
JO  - Algebraic and Geometric Topology
PY  - 2008
SP  - 1567
EP  - 1579
VL  - 8
IS  - 3
UR  - http://geodesic.mathdoc.fr/articles/10.2140/agt.2008.8.1567/
DO  - 10.2140/agt.2008.8.1567
ID  - 10_2140_agt_2008_8_1567
ER  -