Drożdż, Wojciech, and Zbigniew Giergiczny. “The Resistance of Mortars and Concrete With Calcareous Fly Ash on Alkaline Corrosion”. Roads and Bridges - Drogi I Mosty, vol. 12, no. 2, Feb. 2014, pp. 147-58, doi:10.7409/rabdim.013.011.