@article{MASLO_2003__53_2_a1,
     author = {M\'a\v{c}aj, Martin and Pa\v{s}t\'eka, Milan and \v{S}al\'at, Tibor and \v{Z}abka, Marek},
     title = {On difference sets of sets of positive integers},
     journal = {Mathematica slovaca},
     pages = {129--144},
     publisher = {mathdoc},
     volume = {53},
     number = {2},
     year = {2003},
     mrnumber = {1986256},
     zbl = {1048.11008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MASLO_2003__53_2_a1/}
}