Ćwiąkała, Michał, Joanna Korzeniowska, Cezary Kraszewski, and Aleksander Widuch. 2012. “Soil Stabilisation With the Use of Hydraulic Road Binders on the Basis of Brown Coal Fly Ash”. Roads and Bridges - Drogi I Mosty 11 (3):195-214. https://rabdim.pl/index.php/rb/article/view/v11n3p195.