%0 Journal Article %A Taylor, M. A. %T Cartesian Nets and Groupoids %J Canadian mathematical bulletin %D 1973 %P 347-362 %V 16 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1973-056-3/ %R 10.4153/CMB-1973-056-3 %F 10_4153_CMB_1973_056_3