Changes to the occupied and unoccupied electronic structure of TiO2(100) upon alkali metal reduction D. Purdie, B. Reihl, A. Thomas, P.J. Hardman, C.A. Muryn and G. Thornton J. Phys. IV France, 04 C9 (1994) C9-163-C9-166 DOI: 10.1051/jp4:1994926