@misc{Krassowski_Jan_(1883–1947)_Jan_1912,
 author={Krassowski, Jan (1883–1947)},
 volume={I},
 editor={Kalinowski, Stanisław (1873–1946)},
 number={No 5},
 copyright={Public Domain},
 address={Warszawa},
 journal={Wektor : czasopismo matematyczno-fizyczne},
 howpublished={online},
 year={1912},
 publisher={Drukarnia Naukowa},
 publisher={Stanisław Kalinowski},
 language={pol},
 type={Text},
 title={Jan Kowalczyk},
 URL={http://www.rcin.org.pl/Content/86937/PDF/WA35_113002_P261_Jan-Kowalczyk.pdf},
}