@article{AUCMP_2007__48_2_a2,
     author = {Brendle, J\"org},
     title = {Mad families and ultrafilters},
     journal = {Acta Universitatis Carolinae. Mathematica et Physica},
     pages = {19--35},
     publisher = {mathdoc},
     volume = {48},
     number = {2},
     year = {2007},
     mrnumber = {2512899},
     zbl = {1170.03026},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AUCMP_2007__48_2_a2/}
}