[http://iznogood-factory.org/pub/gEDA/introgEDA.fr.html]
ca marche pas mal...
[http://funlab.fr/funwiki/doku.php?image=wiki%3&ns=wiki%3Auser&tab_details=view&do=media&tab_files=search]
[https://web.archive.org/web/20081123064506/http://www.delorie.com/pcb/docs/gs/gs.html]