Name	Info	Provider	Link
	subscription/membership/fee required	Ingenta plc	https://www.ingentaconnect.com/openurl?genre=article&issn=&volume=20&issue=14&spage=1213&aulast=Ding
	subscription/membership/fee required	Bentham Science Publishers Ltd.	http://www.eurekaselect.com/174221/article