@article{2227,
author = {Conkling, Randall and Ellis, David},
title = {On metric groupoids and their completions},
journal = {Portugaliae mathematica},
volume = {12},
year = {1953},
pages = {99-103},
zbl = {0051.25301},
mrnumber = {0060524},
language = {en},
url = {http://dml.mathdoc.fr/item/2227}
}
Conkling, Randall; Ellis, David. On metric groupoids and their completions. Portugaliae mathematica, Tome 12 (1953) pp. 99-103. http://gdmltest.u-ga.fr/item/2227/