@misc{Kowalczyk_Grażyna_Polish,
 author={Kowalczyk, Grażyna},
 copyright={Nofer Institute of Occupational Medicine},
 howpublished={online},
 publisher={Nofer Institute of Occupational Medicine},
 publisher={Polish Association of Occupational Medicine},
 language={eng},
 title={Polish bibliography of occupational medicine, 2006},
 type={serial - article},
 type={language document},
}