Attaweel, Mohamed E., and Haneen Almassry. “On the Mohand Transform and Ordinary Differential Equations With Variable Coefficients”. Al-Mukhtar Journal of Sciences 35, no. 1 (January 30, 2020): 01–06. Accessed June 28, 2022. https://omu.edu.ly/journals/index.php/mjsc/article/view/229.