Name	Info	Provider	Link
	subscription/membership/fee required	Ingenta plc	https://www.ingentaconnect.com/openurl?genre=article&issn=1568-0266&volume=6&issue=2&spage=77&aulast=Tinker
	subscription/membership/fee required	Bentham Science Publishers Ltd.	https://www.eurekaselect.com/56827/article
Cited by Patents in	free resource	The Lens - Patent Citations	https://www.lens.org/lens/search/patent/list?q=citation_id:16454760