@article{TAC_2018_33_a41,
     author = {Erik Bedos and S. Kaliszewski and John Quigg and Jack Spielberg},
     title = {On finitely aligned left cancellative small categories, {Zappa-Szep
products} and {Exel-Pardo} algebras},
     journal = {Theory and applications of categories},
     pages = {1346--1406},
     publisher = {mathdoc},
     volume = {33},
     year = {2018},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TAC_2018_33_a41/}
}