@article{TAC_2000_7_a4,
     author = {S. Kasangian and E.M. Vitale},
     title = {Factorization systems for symmetric cat-groups},
     journal = {Theory and applications of categories},
     pages = {47--70},
     publisher = {mathdoc},
     volume = {7},
     year = {2000},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TAC_2000_7_a4/}
}