QUASI-MOLECULAR EFFECTS IN ION-ATOM COLLISIONS AT ION ENERGIES IN THE HUNDRED-keV REGION E.G. Bøving, K. Edlund and G. Sørensen J. Phys. Colloques, 40 C1 (1979) C1-246-C1-249 DOI: 10.1051/jphyscol:1979151