@misc{Indulski_Janusz_The,
 author={Indulski, Janusz and Nofer, Jerzy and Szymborski, L.},
 howpublished={online},
 publisher={Państwowy Zakład Wydawnictw Lekarskich},
 language={eng},
 language={pol},
 language={rus},
 type={article},
 type={language document},
 title={The assessment of the validity of temporal work disability certificates issued by the general and industrial health service},
}