Gradkowski, Krzysztof. “Effect of Strengthening of the Ground Subbase of Road Pavement by Geotextiles – Experimental Investigation”. Roads and Bridges - Drogi i Mosty 7, no. 4 (April 1, 2008): 5–22. Accessed July 3, 2024. https://rabdim.pl/index.php/rb/article/view/v7n4p5.