@misc{Helbrych_Paweł_The,
 author={Helbrych Paweł},
 howpublished={online},
 publisher={Wydaw. Politechniki Częstochowskiej},
 language={eng},
 title={The impact of sulfuric waste on the properties of concrete composites},
 type={artykuł},
 keywords={concrete composities},
}