@article{10_4153_CJM_1973_130_4,
     author = {Barr, Michael},
     title = {Non-Abelian {Torsion} {Theories}},
     journal = {Canadian journal of mathematics},
     pages = {1224--1237},
     year = {1973},
     volume = {25},
     number = {6},
     doi = {10.4153/CJM-1973-130-4},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1973-130-4/}
}