@article{CTGDC_1993__34_1_57_0,
     author = {Dawson, Robert and Pare, Robert},
     title = {General associativity and general composition for double categories},
     journal = {Cahiers de Topologie et G\'eom\'etrie Diff\'erentielle Cat\'egoriques},
     pages = {57--79},
     publisher = {Dunod \'editeur, publi\'e avec le concours du CNRS},
     volume = {34},
     number = {1},
     year = {1993},
     mrnumber = {1213297},
     zbl = {0778.18005},
     language = {en},
     url = {http://www.numdam.org/item/CTGDC_1993__34_1_57_0/}
}