K. Gérard

Penning-Ionization Electron Spectroscopy of Chemisorbed CO

G. Ertl, H. Conrad, H. Haberland, 1979 .

Double ionization in the penning process

H. Hotop, K. Gérard, 1976 .

Electron-ion coincidence study of ionizing thermal energy collisions between He*(21S) and Ar atoms

H. Hotop, A. Merz, M. Ruf, 2021 .