Er, Yb, and Er, Yb (CO-)doped yttria thin films, deposited by an aerosol assisted MO-CVD process W. Meffre, J.-L. Deschanvres, M.-F. Joubert, L. Abello, J.-C. Joubert and B. Jacquier J. Phys. IV France, 09 PR8 (1999) Pr8-583-Pr8-588 DOI: 10.1051/jp4:1999873