TY  - JOUR
AU  - Patrick Graf
AU  - Sándor J. Kovács
TI  - An optimal extension theorem for 1-forms and the Lipman–Zariski conjecture
JO  - Documenta mathematica
PY  - 2014
SP  - 815
EP  - 830
VL  - 19
UR  - http://geodesic.mathdoc.fr/articles/10.4171/dm/465/
DO  - 10.4171/dm/465
ID  - 10_4171_dm_465
ER  -