@misc{_Badania_1981,
 journal={Badania Systemowe},
 address={Warszawa},
 howpublished={online},
 year={1981 -},
 publisher={IBS PAN},
 language={pol},
 type={Text},
 title={Badania Systemowe / Polska Akademia Nauk. Instytut Badań Systemowych},
}