YASSIN, S.Kh. et al.
 Improvement the Action Efficiency  of Microwave  Vacuum Tube Type GI-19B by Activation  its Intersurfaces.
<strong>Ibn AL- Haitham Journal For Pure and Applied Science</strong>, [S.l.], v. 21, n. 2, p. 36-44, sep. 2017.
ISSN 2521-3407.
Available at: &lt;<a href="http://jih.uobaghdad.edu.iq/index.php/j/article/view/1347" target="_new">http://jih.uobaghdad.edu.iq/index.php/j/article/view/1347</a>&gt;. Date accessed: 22 nov. 2019.