@article{10_14708_wm_v3i1_2679,
     author = {B. Rokowska},
     title = {O okresowych ci\k{a}gach liczb naturalnych},
     journal = {Wiadomo\'sci Matematyczne},
     pages = { 41--43},
     publisher = {mathdoc},
     volume = {3},
     number = {1},
     year = {1959},
     doi = {10.14708/wm.v3i1.2679},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/wm.v3i1.2679/}
}