@article{10_4064_cm_15_2_211_216,
     author = {H.-H. Herda and R. C. Metzler},
     title = {Closure and interior in finite topological spaces},
     journal = {Colloquium Mathematicum},
     pages = {211--216},
     publisher = {mathdoc},
     volume = {15},
     number = {2},
     year = {1966},
     doi = {10.4064/cm-15-2-211-216},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-15-2-211-216/}
}