Dietrich Menzel
Journal of Electron Spectroscopy and Related Phenomena 72 19 (1995)
Dietrich Menzel
Surface Science 299-300 170 (1994)
J. Stöhr, R. Jaeger, and J. J. Rehr
Phys. Rev. Lett. 51 821 (1983)
Eberhard Umbach
Surface Science 117 482 (1982)
J. Stöhr and R. Jaeger
Phys. Rev. B 26 4111 (1982)
O. Gunnarsson and K. Schönhammer
Phys. Rev. Lett. 46 859 (1981)
O Gunnarsson and K Schönhammer
Phys. Scr. 21 575 (1980)
O. Gunnarsson and K. Schönhammer
Phys. Rev. B 22 3710 (1980)