@misc{WM_1899_3_1-2_a5,
     title = {Kronika},
     journal = {Wiadomo\'sci Matematyczne},
     pages = {81--83},
     publisher = {mathdoc},
     volume = {3},
     number = {1-2},
     year = {1899},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/item/WM_1899_3_1-2_a5/}
}