@article{TAC_2010_23_a2,
     author = {Ross Street and Dominic Verity},
     title = {The comprehensive factorization and torsors},
     journal = {Theory and applications of categories},
     pages = {42--75},
     publisher = {mathdoc},
     volume = {23},
     year = {2010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TAC_2010_23_a2/}
}