@misc{Krawczak_Maciej_New_2012,
 author={Krawczak, Maciej and Szmidt, Eulalia and Kacprzyk, Janusz (1947– ) and Zadrożny, Sławomir and Atanassov, Krassimir Todorov (1954– ) and Drewniak, Józef and Wygralak, Maciej},
 copyright={Creative Commons Attribution BY 4.0 license},
 address={Warszawa},
 journal={Książka = Book},
 howpublished={online},
 year={2012},
 publisher={Instytut Badań Systemowych. Polska Akademia Nauk},
 publisher={Systems Research Institute. Polish Academy of Sciences},
 language={pol},
 type={Text},
 title={New developments in fuzzy sets, intuitionistic fuzzy sets, generalized nets and related topics. Volume I: Foundations * Przedmowa},
 URL={http://www.rcin.org.pl/Content/198688/PDF/KS-2012-03-P.pdf},
}