@article{JLT_2017_27_4_JLT_2017_27_4_a14,
     author = {M. Murray and D. M. Roberts and C. Wockel},
     title = {Quasi-Periodic {Paths} and a {String} {2-Group} {Model} from the {Free} {Loop} {Group}},
     journal = {Journal of Lie theory},
     pages = {1151--1177},
     year = {2017},
     volume = {27},
     number = {4},
     url = {http://geodesic.mathdoc.fr/item/JLT_2017_27_4_JLT_2017_27_4_a14/}
}