@article{10_14708_wm_v10i1_2216,
     author = {K. Sieklucki},
     title = {A. {Lelek,} {Zbiory}},
     journal = {Wiadomo\'sci Matematyczne},
     pages = { 127--129},
     year = {1967},
     volume = {10},
     number = {1},
     doi = {10.14708/wm.v10i1.2216},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/wm.v10i1.2216/}
}