@Patent{Supelec230,
author = {Guang-Hua Duan and Hakon Helmers and Arnaud Leroy and Joel Jacquet},
title = {{Optical cavity resonating over a continuous range of frequencies}},
year = {2003},
month = {apr},
annote = {Brevet n° FR2830991},
url = {http://v3.espacenet.com/textdoc\'eDB=EPODOC\&IDX=US2003081639\&F=0}
}