@article{10_14712_1213_7243_2015_203,
     author = {Kwela, A. and Zakrzewski, P.},
     title = {Combinatorics of ideals --- selectivity versus density},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {261--266},
     publisher = {mathdoc},
     volume = {58},
     number = {2},
     year = {2017},
     doi = {10.14712/1213-7243.2015.203},
     mrnumber = {3666945},
     zbl = {06773718},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.14712/1213-7243.2015.203/}
}