@incollection {key2503392m,
AUTHOR = {Freedman, Michael and Nayak, Chetan
and Walker, Kevin and Wang, Zhenghan},
TITLE = {On picture \$(2+1)\$-{TQFT}s},
BOOKTITLE = {Topology and physics},
EDITOR = {Kevin Lin and Zhenghan Weng and Weiping
Zhang},
SERIES = {Nankai Tracts in Mathematics},
NUMBER = {12},
PUBLISHER = {World Scientific},
ADDRESS = {Hackensack, NJ},
YEAR = {2008},
PAGES = {19--106},
DOI = {10.1142/9789812819116_0002},
NOTE = {(Tianjin, China, 27--31 July 2007).
ArXiv:0806.1926. MR:2503392. Zbl:1168.81024.},
ISBN = {9789812819109},
}
