@article{articlee6b7261a,
title   = {Active planar waveguides based on sol-gel 'Er POT. 3+'-doped Si'O IND.2'-Zr'O IND.2' for photonic applications: morphological, structural and optical properties},
author = {Gonçalves, Rogéria Rocha and Guimarães, J. J. and Ferrari, J. L. and Maia, L. J. Q. and Ribeiro, S. J. L.},
year = {2008},
journal   = {Journal of Non-Crystalline Solids}
}