@misc{Banach_Stefan_(1892-1945)._Über,
 author={Banach, Stefan (1892-1945).},
 howpublished={online},
 publisher={[s.n.]},
 publisher={Drukarnia Uniwersytetu Jagiellońskiego},
 language={pol},
 type={language document},
 type={serial},
 title={Über additive Massfunktionen in abstrakten Mengen},
}