@misc{Mercik_Jacek_Methodology_1989,
 author={Mercik, Jacek},
 copyright={Creative Commons Attribution BY 4.0 license},
 address={Warszawa},
 journal={Książka = Book},
 howpublished={online},
 year={1989},
 publisher={Instytut Badań Systemowych. Polska Akademia Nauk},
 publisher={Systems Research Institute. Polish Academy of Sciences},
 language={eng},
 title={Methodology and applications of decision support systems : proceedings of the 3rd polish - finnish symposium, Gdańsk-Sobieszewo, september 26-29, 1988 * On the entry problem},
 type={Text},
 URL={http://rcin.org.pl/Content/205728/PDF/KS-1989-01-P11.pdf},
}