@article{05002583, title = {Universal manifold pairings and positivity.}, journal = {Geometry \& Topology}, volume = {5}, year = {2005}, pages = {2303-2317}, doi = {10.2140/gt.2005.9.2305}, zbl = {1129.57035}, language = {en}, url = {http://dml.mathdoc.fr/item/05002583} }
Freedman, Michael H.; Kitaev, Alexei; Nayak, Chetan; Slingerland, Johannes K.; Walker, Kevin; Wang, Zhenghan. Universal manifold pairings and positivity.. Geometry & Topology, Tome 5 (2005) pp. 2303-2317. doi : 10.2140/gt.2005.9.2305. http://gdmltest.u-ga.fr/item/05002583/