Golewski, Grzegorz Ludwik. “Effect of Fly Ash Addition on the Fracture Toughness of Plain Concrete at Third Model of Fracture”. Journal of Civil Engineering and Management 23, no. 5 (May 24, 2017): 613-620. Accessed November 22, 2024. https://jbem.vgtu.lt/index.php/JCEM/article/view/1094.