@article{10_4064_cm141_2_5,
     author = {Samuel G. da Silva},
     title = {On the extent of separable,  locally compact, selectively $(a)$-spaces},
     journal = {Colloquium Mathematicum},
     pages = {199--208},
     publisher = {mathdoc},
     volume = {141},
     number = {2},
     year = {2015},
     doi = {10.4064/cm141-2-5},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm141-2-5/}
}