@article{CTGDC_2004__45_2_82_0, author = {Lawson, Mark V. and Steinberg, Benjamin}, title = {Ordered groupoids and \'etendues}, journal = {Cahiers de Topologie et G\'eom\'etrie Diff\'erentielle Cat\'egoriques}, pages = {82--108}, publisher = {Dunod \'editeur, publi\'e avec le concours du CNRS}, volume = {45}, number = {2}, year = {2004}, zbl = {1060.18002}, mrnumber = {2072933}, language = {en}, url = {http://www.numdam.org/item/CTGDC_2004__45_2_82_0/} }