@misc{WM_1906_10_4-5-6_a5,
     title = {Kronika},
     journal = {Wiadomo\'sci Matematyczne},
     pages = {232--237},
     publisher = {mathdoc},
     volume = {10},
     number = {4-5-6},
     year = {1906},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/item/WM_1906_10_4-5-6_a5/}
}