@article{TAC_2017_32_a41,
     author = {Thomas Weighill},
     title = {Mal'tsev objects, $R_1$-spaces and ultrametric spaces},
     journal = {Theory and applications of categories},
     pages = {1485--1500},
     publisher = {mathdoc},
     volume = {32},
     year = {2017},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TAC_2017_32_a41/}
}