@article{Tracz_T._Open_2016,
 author={Tracz, T.},
 volume={64},
 number={No 4 (Special Section on Civil Engineering – Ongoing Technical Research. Part I)},
 howpublished={online},
 pages={775-783},
 journal={Bulletin of the Polish Academy of Sciences: Technical Sciences},
 year={2016},
 title={Open porosity of cement pastes and their gas permeability},
 doi={10.1515/bpasts-2016-0086},
}