@article{10_14708_wm_v25i01_4009,
     author = {Redaktor},
     title = {K\k{a}cik j\k{e}zykowy},
     journal = {Wiadomo\'sci Matematyczne},
     pages = { 143--150},
     publisher = {mathdoc},
     volume = {25},
     number = {01},
     year = {1983},
     doi = {10.14708/wm.v25i01.4009},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/wm.v25i01.4009/}
}