@article{10_4064_cm_42_1_121_122,
     author = {S. Fajtlowicz},
     title = {A property of the lattice of subsemilattices},
     journal = {Colloquium Mathematicum},
     pages = {121--122},
     publisher = {mathdoc},
     volume = {42},
     number = {1},
     year = {1979},
     doi = {10.4064/cm-42-1-121-122},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-42-1-121-122/}
}