@misc{Zejda_Jan_E._Cervical,
 author={Zejda, Jan E. and Stasiów, Bartłomiej},
 copyright={Zejda, Jan E.},
 copyright={Stasiów, Bartłomiej},
 howpublished={online},
 publisher={Nofer Institute of Occupational Medicine},
 publisher={Polish Association of Occupational Medicine},
 language={eng},
 type={serial - article},
 type={language document},
 title={Cervical spine degenerative changes (narrowed itnervertebral disc spaces and osteophytes) in coal miners},
}