Solterbecck, C., Tiedje, O., Strasser, T., Brodersen, S., Bödicker, A., Schattke, W., Bartoš, I. Optical potential and escape dopth for electron scattering at very low energies. Journal of Electron Spectroscopy and Related Phenomena. 1999, 101/103(-), 473-478. ISSN 0368-2048. E-ISSN 1873-2526.