B. Luo and J. Urban: Non-dipole contributions and the curved-wave approximation for surface electron energy loss fine structure spectra above the N2,3 edge of polycrystalline palladium. Journal of Electron Spectroscopy and Related Phenomena57 (3-4), 399–407 (1991).
B. Luo and J. Urban: Structure determination of oxygen adsorbates on Cu surfaces by means of the SEELFS technique. Journal of Physics: Condensed Matter3 (7), 2873–2880 (1991).
B. Luo and E. Zeitler: M-shell cross-sections for fast electron inelastic collisions based on photoabsorption data. Journal of Electron Spectroscopy and Related Phenomena57 (3-4), 285–295 (1991).
J. Urban and B. Luo: Investigations on Cu surfaces by using the SEELFS technique: invalidity of the dipole approximation. Surface Science239 (3), 235–242 (1990).