@article{CMUC_2013__54_2_a1,
     author = {Arhangel'skii, A. V.},
     title = {A generalization of {\v{C}ech-complete} spaces and {Lindel\"of} $\Sigma $-spaces},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {121--139},
     publisher = {mathdoc},
     volume = {54},
     number = {2},
     year = {2013},
     mrnumber = {3067699},
     zbl = {06221258},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_2013__54_2_a1/}
}