@article{00650832, title = {Measures of Lindel\"of and separability in approach spaces.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {17}, year = {1994}, pages = {597-606}, doi = {10.1155/S0161171294000840}, zbl = {0813.54022}, language = {en}, url = {http://dml.mathdoc.fr/item/00650832} }
Baekeland, R.; Lowen, R. Measures of Lindelöf and separability in approach spaces.. International Journal of Mathematics and Mathematical Sciences, Tome 17 (1994) pp. 597-606. doi : 10.1155/S0161171294000840. http://gdmltest.u-ga.fr/item/00650832/