Podawca, Konrad, and Agata Grzymała. “Comparative Analysis of Selected Features of Traditional and Photocatalytical Paving Stones”. Scientific Review Engineering and Environmental Sciences (SREES) 30, no. 1 (March 30, 2021): 75–85. Accessed December 11, 2024. https://srees.sggw.edu.pl/article/view/119.