@article{CTGDC_1982__23_3_279_0,
     author = {Wood, R. J.},
     title = {Abstract pro arrows {I}},
     journal = {Cahiers de Topologie et G\'eom\'etrie Diff\'erentielle Cat\'egoriques},
     pages = {279--290},
     publisher = {Dunod \'editeur, publi\'e avec le concours du CNRS},
     volume = {23},
     number = {3},
     year = {1982},
     mrnumber = {675339},
     zbl = {0497.18012},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CTGDC_1982__23_3_279_0/}
}