Roman, V. I., A. V. Kupliauskiene, and A. A. Borovik. “Partial Ionization Cross-Sections of Rubidium Atom by Electron Impact”. Reports of the National Academy of Sciences of Ukraine, no. 8 (August 28, 2015): 79–83. Accessed June 20, 2026. https://nasu-periodicals.org.ua/index.php/dp/article/view/15147.