@misc{Petrǔ_Aleš_Utilization,
 author={Petrǔ, Aleš},
 howpublished={online},
 publisher={Wydawnictwo Politechniki Śląskiej},
 language={eng},
 title={Utilization of lightweight materials in ceramic body},
 type={artykuł},
 keywords={Politechnika Śląska, budownictwo},
}