@ARTICLE{Tracz_T._Open_2016, author={Tracz, T.}, volume={64}, number={No 4 (Special Section on Civil Engineering – Ongoing Technical Research. Part I)}, journal={Bulletin of the Polish Academy of Sciences Technical Sciences}, pages={775-783}, howpublished={online}, year={2016}, title={Open porosity of cement pastes and their gas permeability}, URL={http://www.journals.pan.pl/Content/105749/PDF/10.1515bpasts-2016-0086.pdf}, doi={10.1515/bpasts-2016-0086}, }