@misc{WM_1906_10_D_a3,
     title = {Zadania do rozwi\k{a}zania},
     journal = {Wiadomo\'sci Matematyczne},
     pages = {22--23},
     publisher = {mathdoc},
     volume = {10},
     number = {D},
     year = {1906},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/item/WM_1906_10_D_a3/}
}