@article{10_21136_CMJ_1951_100020,
     author = {Sierpi\'nski, Wac{\l}aw},
     title = {Sur un probl\`eme de {M.} {J.} {Nov\'ak}},
     journal = {Czechoslovak Mathematical Journal},
     pages = {97--101},
     publisher = {mathdoc},
     volume = {01},
     number = {2},
     year = {1951},
     doi = {10.21136/CMJ.1951.100020},
     mrnumber = {0047105},
     zbl = {0045.16903},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1951.100020/}
}