@article{10_4064_cm_41_2_211_214,
     author = {Witold Bula},
     title = {On compact {Hausdorff} spaces having finitely many types of open subsets},
     journal = {Colloquium Mathematicum},
     pages = {211--214},
     publisher = {mathdoc},
     volume = {41},
     number = {2},
     year = {1979},
     doi = {10.4064/cm-41-2-211-214},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-41-2-211-214/}
}