@misc{Hudeček_Vlastimil_Present,
 author={Hudeček, Vlastimil and Urban, Petr and Michalčík, Petr},
 howpublished={online},
 publisher={Wydawnictwo Politechniki Śląskiej},
 language={eng},
 title={Present problems caused by the release of mine gas into the air and measures to decrease the amount released},
 type={artykuł},
 keywords={Politechnika Śląska, górnictwo, przemysł górniczy, technika górnicza},
}