%0 Journal Article %A Conkling, Randall %A Ellis, David %T On metric groupoids and their completions %J Portugaliae mathematica %D 1953 %P 99-103 %V 12 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/PORMA_1953__12_3_114717/ %G en %F PORMA_1953__12_3_114717