Moeller, W. Surface Science (OP), Max Planck Institute for Plasma Physics, Max Planck Society;
Moeller, W., Boergesen, P., & Scherzer, B. (1987). Thermal and Ion-Induced Release of Hydrogen Atoms Implanted into Graphite. Nuclear Instruments and Methods in Physics Research. B, 19/20, 2, 826-831.