* [http://web.archive.org/web/20080126091833/http://www.penbid.com/Auction/showarticle.asp?art_id=16] Articolo sulla storia dell'azienda | * [http://web.archive.org/web/20080126091833/http://www.penbid.com/Auction/showarticle.asp?art_id=16] Articolo sulla storia dell'azienda |