Dinkha, Youkhanna Zayia, and Salim T. Yousif. “Time Dependent Properties of Concrete: A State of the Art Review”. Journal of Civil Engineering Frontiers 2, no. 02 (August 7, 2021): 38-50. Accessed October 23, 2021. https://jocivilef.org/index.php/jocef/article/view/37.