@article{PORMA_2000__57_3_48783, author = {Borges, Carlos R.}, title = { does not imply .}, journal = {Portugaliae mathematica}, pages = {255--258}, publisher = {mathdoc}, volume = {57}, number = {3}, year = {2000}, zbl = {0963.54005}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_2000__57_3_48783/} }