@misc{WM_1902_6_4-5_a10,
     title = {Kronika},
     journal = {Wiadomo\'sci Matematyczne},
     pages = {305--310},
     year = {1902},
     volume = {6},
     number = {4-5},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/item/WM_1902_6_4-5_a10/}
}