Lapko, Andrzej, and Robert Grygo. “Improving the Structural Behaviour RC Precast Concrete Beams Made of Recycled Aggregate Concrete”. Journal of Civil Engineering and Management 22, no. 2 (March 1, 2016): 234-242. Accessed April 18, 2024. https://journals.vilniustech.lt/index.php/JCEM/article/view/1292.