@article{10_14708_wm_v13i1_1988,
     author = {B. Kopoci\'nski and J. {\L}ukaszewicz},
     title = {Stefan {Zubrzycki}},
     journal = {Wiadomo\'sci Matematyczne},
     pages = { 57--65},
     publisher = {mathdoc},
     volume = {13},
     number = {1},
     year = {1971},
     doi = {10.14708/wm.v13i1.1988},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/wm.v13i1.1988/}
}