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B.L. Schram, Partial ionization cross sections of noble gases for electrons with energy 0.5-18 keV II. Argon, krypton and xenon, Physica 32, 197-208 (1966)
F.J. de Heer, J. Schutten and H.R. Moustafa Moussa, Ionization and electron capture for helium ions incident on noble and diatomic gases between 10 and 150 KeV, Physica 32, 1793-1807 (1966)
B.L. Schram, A.J.H. Boerboom and J. Kistemaker, Partial ionization cross sections of noble gases for electrons with energy 0.5-16 keV I. Helium and neon, Physica 32, 185-196 (1966)
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