@article{AUCMP_2005_46_2_a2,
     author = {Fla\v{s}kov\'a, Jana},
     title = {Thin ultrafilters},
     journal = {Acta Universitatis Carolinae. Mathematica et Physica},
     pages = {13--19},
     year = {2005},
     volume = {46},
     number = {2},
     mrnumber = {2194039},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AUCMP_2005_46_2_a2/}
}