STM studies of the N/Cu(111) system: surface structure, electron confinement and tip-induced modificationA. M. Goedken, S. L. Silva, S. M. York and F. M. LeibsleEur. Phys. J. AP, 19 2 (2002) 77-82DOI: https://doi.org/10.1051/epjap:2002051