@misc{Chwistek_Leon_(1884–1944)_The_1923,
 author={Chwistek, Leon (1884–1944)},
 editor={Polskie Towarzystwo Matematyczne},
 copyright={Public Domain},
 address={Cracov},
 journal={Annales de la Société Polonaise de Mathématique T. 2 (1923)},
 howpublished={online},
 year={1923},
 publisher={[s.n.]},
 language={eng},
 language={eng},
 type={Text},
 title={The theory of constructive Types : (Principies of logic and mathematics). Part I},
 URL={http://www.rcin.org.pl/impan/Content/15374/PDF/WA35_32286_cz159-r1923-T2_Annales-art-2.pdf},
}