@article{AUCMP_2001__42_2_a2,
     author = {Cicho\'n, Jacek and Jasi\'nski, Andrzej},
     title = {A note on complex unions of subsets of the real line},
     journal = {Acta Universitatis Carolinae. Mathematica et Physica},
     pages = {11--15},
     publisher = {mathdoc},
     volume = {42},
     number = {2},
     year = {2001},
     mrnumber = {1900386},
     zbl = {1001.03046},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AUCMP_2001__42_2_a2/}
}