Mahmoud, H. Z., Z. H.Naji, S. F. Salman, A. K. Mahmoud, E. Berdimurodov, A. AAG Alrubaiy, H. J. Khalifa, and H. Okuyucu. “Investigation the Influence of Adding Nano –Yttria Partially Stabilized Zirconia (NZrO2-5wt%YPSZ) on the Physical and Mechanical Properties of Concrete”. Diyala Journal of Engineering Sciences, vol. 16, no. 3, Sept. 2023, pp. 52-63, doi:10.24237/djes.2023.16305.