@article{10_4064_cm_46_1_19_21,
     author = {Andrzej Szyma\'nski},
     title = {On spaces with binary normal subbase},
     journal = {Colloquium Mathematicum},
     pages = {19--21},
     publisher = {mathdoc},
     volume = {46},
     number = {1},
     year = {1982},
     doi = {10.4064/cm-46-1-19-21},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-46-1-19-21/}
}