@article{10_4064_fm_49_2_151_155,
     author = {Wac{\l}aw Sierpi\'nski},
     title = {Sur les familles d'ensembles infinis de nombres naturels},
     journal = {Fundamenta Mathematicae},
     pages = {151--155},
     publisher = {mathdoc},
     volume = {49},
     number = {2},
     year = {1960},
     doi = {10.4064/fm-49-2-151-155},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-49-2-151-155/}
}