@article{TAC_1999_5_a10,
     author = {Marek A. Bednarczyk and Andrzej M. Borzyszkowski and Wieslaw Pawlowski},
     title = {Generalized congruences -- {Epimorphisms} in {Cat}},
     journal = {Theory and applications of categories},
     pages = {266--280},
     publisher = {mathdoc},
     volume = {5},
     year = {1999},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TAC_1999_5_a10/}
}