Ramos, G. Max Planck Society;
Scherzer, B. M. U. Surface Science (OP), Max Planck Institute for Plasma Physics, Max Planck Society;
Ramos, G., & Scherzer, B. M. U. (1994). Radiation damage and trapping of helium in HOPG-graphite. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 85(1-4), 479-483. doi:10.1016/0168-583X(94)95867-X.