@misc{WM_1903_7_5-6_a10,
     title = {Konkurs {"Przegl\k{a}du} {Filozoficznego"}},
     journal = {Wiadomo\'sci Matematyczne},
     pages = {331--332},
     publisher = {mathdoc},
     volume = {7},
     number = {5-6},
     year = {1903},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/item/WM_1903_7_5-6_a10/}
}