@article{10_4064_fm_110_1_11_24,
     author = {Bohuslav Balcar and Jan Pelant and Petr Simon},
     title = {The space of ultrafilters on {N} covered by nowhere dense sets},
     journal = {Fundamenta Mathematicae},
     pages = {11--24},
     publisher = {mathdoc},
     volume = {110},
     number = {1},
     year = {1980},
     doi = {10.4064/fm-110-1-11-24},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-110-1-11-24/}
}