Name	Info	Provider	Link
	subscription/membership/fee required	Ingenta plc	https://www.ingentaconnect.com/openurl?genre=article&issn=1381-6128&volume=6&issue=11&spage=1159&aulast=Ercan
	subscription/membership/fee required	Bentham Science Publishers Ltd.	https://www.eurekaselect.com/65473/article