C. Snoek, W.F. van der Weg, R. Geballe and P.K. Rol, Inelastic energy losses in collisions of 40-90 keV Ar+ ions with solid and gaseous Cu targets, Physica 35, 1-18 (1967)
J. van den Bos and F.J. de Heer, Electron excitation by protons impinging on hydrogen atoms in a first order impact parameter treatment, Physica 34, 333-348 (1967)
F.J. de Heer, H.R. Moustafa Moussa and M. Inokuti, Production of Lyman-a radiation in collisions of electrons on molecular hydrogen (0.05 - 3 keV), Chem. Phys. Lett. 1, 484-486 (1967)
J. Schutten, P.J. van Deenen, E. de Haas and F.J. de Heer, A semi-automatic monochromator for the determination of excitation cross sections, J. Sci. Instrum. 44, 153-155 (1967)
J. Politiek, J.H. Los, J.J.M. Schipper and A.P.M. Baede, Total cross section measurements of K on rare gases in the thermal and high velocity range. An atom source in the energy range 0.5-40 eV, Entropie 3, 82-85 (1967)
H.J. Hopman, T. Matitti, A. Vermeer and J. Kistemaker, Evidence for a coherent deceleration of an electron beam during the electron plasma frequency instability, Plasma Phys. 9, 39-42 (1967)
A. Tip, On the magnetic field dependence of the transport properties of the hydrogen isotopic molecules H2, D2, and HD, Phys. Lett. A 25, 409-410 (1967)
