Awad , Marwan Manhal. “Linear Optical Properties of Beta Barium Borate (β-BaB2O4) Crystal”. International Journal of Psychosocial Rehabilitation 24, no. 4 (June 30, 2020): 5688–5696. Accessed May 24, 2025. https://psychosocial.com/index.php/ijpr/article/view/5454.