@misc{Ogryczak_Włodzimierz_Social_1998,
 author={Ogryczak, Włodzimierz},
 copyright={Creative Commons Attribution BY 4.0 license},
 address={Warszawa},
 journal={Książka = Book},
 howpublished={online},
 year={1998},
 publisher={Instytut Badań Systemowych. Polska Akademia Nauk},
 publisher={Systems Research Institute. Polish Academy of Sciences},
 language={eng},
 type={Text},
 title={Social security reform : proceedings of the International Workshop Warsaw on 23-24 September, 1997 * A way to formalization * Equity and risk factors in aspiration-based approaches},
 URL={http://www.rcin.org.pl/Content/206616/PDF/KS-1998-01-R02P05.pdf},
}