Doping of SrTiO3 thin films studied by spectroscopic ellipsometry L. Pellegrino, M. Canepa, G. Gonella, E. Bellingeri, D. Marré, A. Tumino and A.S. Siri J. Phys. IV France, 11 PR11 (2001) Pr11-337-Pr11-342 DOI: 10.1051/jp4:20011155