Sadullayeva Feruza Abdullayevna. “DIRECT AND INVERSE PROBLEMS FOR THE THREE-DIMENSIONAL WAVE EQUATION: THEORY, MODELING, AND APPLICATIONS”. Ethiopian International Journal of Multidisciplinary Research, vol. 13, no. 2, Feb. 2026, pp. 525-7, https://eijmr.org/index.php/eijmr/article/view/5061.