“A Study of the Relationship Between the Two Types of Crystallite Dislocation Density and the Particle Size of Barium Oxide (BaO) Nanoparticle”. Ibn AL-Haitham Journal For Pure and Applied Sciences, vol. 37, no. 2, Apr. 2024, pp. 193-02, https://doi.org/10.30526/37.2.3393.