Valivonis, Juozas. “Deflection of Flexural Reinforced Concrete Structures With External Non-Metallic Reinforcement (experimental and Theoretical Investigation)”. Journal of Civil Engineering and Management 8, no. 3 (September 30, 2002): 164-168. Accessed November 22, 2019. https://journals.vgtu.lt/index.php/JCEM/article/view/9118.