@misc{WM_1898_2_1-2_a4,
     title = {Ubezpieczenie kapita{\l}u z rent\k{a}},
     journal = {Wiadomo\'sci Matematyczne},
     pages = {32--36},
     publisher = {mathdoc},
     volume = {2},
     number = {1-2},
     year = {1898},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/item/WM_1898_2_1-2_a4/}
}