@article{10_4064_cm_38_1_41_51,
     author = {Louise E. Moser},
     title = {Closure, interior, and union in finite topological spaces},
     journal = {Colloquium Mathematicum},
     pages = {41--51},
     publisher = {mathdoc},
     volume = {38},
     number = {1},
     year = {1977},
     doi = {10.4064/cm-38-1-41-51},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-38-1-41-51/}
}