TY  - JOUR
AU  - Dragos Oprea
TI  - Framed sheaves over treefolds and symmetric obstruction theories
JO  - Documenta mathematica
PY  - 2013
SP  - 323
EP  - 342
VL  - 18
UR  - http://geodesic.mathdoc.fr/articles/10.4171/dm/399/
DO  - 10.4171/dm/399
ID  - 10_4171_dm_399
ER  -