Laukaitis, Antanas, and Aleksandr Dudik. “A Water-Repelling Investigation of 300–450 kg/M3 Density Porous Silicate Concrete”. Journal of Civil Engineering and Management 2, no. 7 (September 30, 1996): 33-40. Accessed December 28, 2024. https://ijspm.vgtu.lt/index.php/JCEM/article/view/9525.