@article{TAC_1999_5_a2,
     author = {Stephen Lack},
     title = {A note on the exact completion of a regular category, and its
infinitary generalizations},
     journal = {Theory and applications of categories},
     pages = {70--80},
     year = {1999},
     volume = {5},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TAC_1999_5_a2/}
}