Raan, A. F. J. v. (1973). Excitation processes in helium: Electron-impact excitation and collisional transfer of excitation energy. s.n.].
Chicago-referens (17:e uppl.)Raan, Anthony Franciscus Joannes van. Excitation Processes in Helium: Electron-impact Excitation and Collisional Transfer of Excitation Energy. [S.l.: s.n.], 1973.
MLA-referens (8:e uppl.)Raan, Anthony Franciscus Joannes van. Excitation Processes in Helium: Electron-impact Excitation and Collisional Transfer of Excitation Energy. s.n.], 1973.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.