@article{10_4007_annals_2011_174_2_5,
     author = {Daniel S. Freed and Michael J. Hopkins and Constantin Teleman},
     title = {Loop groups and twisted $K$-theory {III}},
     journal = {Annals of mathematics},
     pages = {947--1007},
     publisher = {mathdoc},
     volume = {174},
     number = {2},
     year = {2011},
     doi = {10.4007/annals.2011.174.2.5},
     mrnumber = {2831111},
     zbl = {05960720},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4007/annals.2011.174.2.5/}
}