@misc{Wittczak_Tomasz_X,
 author={Wittczak, Tomasz},
 copyright={Nofer Institute of Occupational Medicine},
 howpublished={online},
 publisher={Nofer Institute of Occupational Medicine},
 publisher={Polish Association of Occupational Medicine},
 language={pol, eng},
 type={language document},
 type={serial - article},
 title={X Krajowy Zjazd Naukowy Polskiego Towarzystwa Medycyny Pracy},
}