@Patent{Supelec226,
author = {Xavier Andrieu and Alain Pastouret and Joel Jacquet and Sylvie Barusseau},
title = {{Optical device having a variable refractive index comprising a ion conductor}},
year = {2004},
month = {jul},
annote = {Brevet n° FR2849700},
url = {http://v3.espacenet.com/textdoc\'eDB=EPODOC\&IDX=AT336024T\&F=0}
}