@article{JOLT_2010_20_1_a6,
     author = {Doug Pickrell and Benjamin Pittman-Polletta},
     title = {Unitary {Loop} {Groups} and {Factorization}},
     journal = {Journal of Lie Theory},
     pages = {93--112},
     year = {2010},
     volume = {20},
     number = {1},
     url = {http://geodesic.mathdoc.fr/item/JOLT_2010_20_1_a6/}
}