@article{10_4064_am_2_2_190_198,
     author = {J. Czechowski and M. Fisz and W. Sadowski and R. Zas\k{e}pa},
     title = {O wyznaczaniu wsp\'o{\l}czynnika bezpiecze\'nstwa},
     journal = {Applicationes Mathematicae},
     pages = {190--198},
     publisher = {mathdoc},
     volume = {2},
     number = {2},
     year = {1954},
     doi = {10.4064/am-2-2-190-198},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/am-2-2-190-198/}
}