@article{PMF_1909_20_1_a6,
     author = {Sierpi\'nski, Wac{\l}aw},
     title = {O systematycznych rozwini\k{e}ciach liczb na iloczyny niesko\'nczone},
     journal = {Prace Matematyczno-Fizyczne},
     pages = {215--234},
     publisher = {mathdoc},
     volume = {20},
     number = {1},
     year = {1909},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/item/PMF_1909_20_1_a6/}
}