J. Hussein, Bushra. “Theoretical Study to Calculate the Focal Length of Focusing System from Plasma Source”. Mustansiriyah Journal for Sciences and Education 17, no. 1 (August 12, 2020): 13–22. Accessed November 9, 2026. https://edumag.uomustansiriyah.edu.iq/index.php/mjse/article/view/584.