@article{urn:eudml:doc:39865, title = {A counterexample in semimetric spaces.}, journal = {Extracta Mathematicae}, volume = {5}, year = {1990}, pages = {38-40}, zbl = {1167.54305}, language = {en}, url = {http://dml.mathdoc.fr/item/urn:eudml:doc:39865} }
Fernández Castillo, Jesús M.; Montalvo, Francisco. A counterexample in semimetric spaces.. Extracta Mathematicae, Tome 5 (1990) pp. 38-40. http://gdmltest.u-ga.fr/item/urn:eudml:doc:39865/