@misc{Janiszewski_Zygmunt_(1888–1920)_Über_1962,
 author={Janiszewski, Zygmunt (1888–1920)},
 editor={Borsuk, Karol (1905–1982). Red.},
 copyright={Public Domain},
 address={Warszawa},
 howpublished={online},
 year={1962},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={ger},
 type={Text},
 title={Über die begriffe "linie" und "fläche"},
 URL={http://www.rcin.org.pl/Content/134155/PDF/WA35_167973_17257_Uber.pdf},
}