@article{10_4153_CJM_1996_013_x,
     author = {Barr, Michael},
     title = {Acyclic {Models}},
     journal = {Canadian journal of mathematics},
     pages = {258--273},
     year = {1996},
     volume = {48},
     number = {2},
     doi = {10.4153/CJM-1996-013-x},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1996-013-x/}
}