@Patent{Supelec228,
author = {Sabry Khalfallah and Joel Jacquet},
title = {{Wavelength tunable optical filter}},
year = {2003},
month = {oct},
annote = {Brevet n° FR2838833},
url = {http://v3.espacenet.com/textdoc\'eDB=EPODOC\&IDX=EP1355176\&F=0}
}