Reuß, C. Max Planck Society;
Shumay, I. L., Hofer, U., Reuß, C., Thomann, U., Wallauer, W., & Fauster, T. (1998). Lifetimes of image-potential states on Cu(100) and Ag(100) measured by femtosecond time-resolved two-photon photoemission. Physical Review B, 58(20), 13974-13981. doi:10.1103/PhysRevB.58.13974.