@article{TAC_2012_26_a17,
     author = {J.R.B. Cockett and Xiuzhan Guo and Pieter Hofstra},
     title = {Range categories {II:} {Towards} regularity},
     journal = {Theory and applications of categories},
     pages = {453--500},
     publisher = {mathdoc},
     volume = {26},
     year = {2012},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TAC_2012_26_a17/}
}