IONISATION OF HELIUM BY MULTIPLY CHARGED IONS AT INTERMEDIATE AND HIGH ENERGIES P. D. FAINSTEIN, V. H. PONCE et R. D. RIVAROLAJ. Phys. Colloques, 50 C1 (1989) C1-183-C1-188DOI: https://doi.org/10.1051/jphyscol:1989121