Changes
/* Investigation */
*[http://www.vieuzordiland.fr/index.php?option=com_content&task=view&id=23&Itemid=34 Vieuxzordiland's page on the matter. In French]
*http://v3.espacenet.com/publicationDetails/biblio?CC=GB&NR=2243701A&KC=A&FT=D&date=19911106&DB=&locale= link to a patent rumoured to be ACID's patent.
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