Al-Obaidi, Hassan N., et al. “Investigation of Linear Polarization for a Specimen Insulator of Scanning Electron Microscope in Sense of Mirror Efectronic Phenomenon”. Ibn AL-Haitham Journal For Pure and Applied Sciences, vol. 28, no. 2, Mar. 2017, pp. 22-31, https://jih.uobaghdad.edu.iq/index.php/j/article/view/144.