Eguiluz, Adolfo G. Theory, Fritz Haber Institute, Max Planck Society;
Deisz, J. J., Eguiluz, A. G., & Hanke, W. (1993). Quasiparticle theory versus density-functional theory at a metal surface. Physical Review Letters, 71(17), 2793-2796. doi:10.1103/PhysRevLett.71.2793.