@article{TAC_2017_32_a27,
     author = {Madalina Roxana Buneci},
     title = {A {Urysohn} type lemma for groupoids},
     journal = {Theory and applications of categories},
     pages = {970--994},
     publisher = {mathdoc},
     volume = {32},
     year = {2017},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TAC_2017_32_a27/}
}