Name	Info	Provider	Link
	subscription/membership/fee required	IOP Publishing Ltd.	https://doi.org/10.1088/0953-8984/27/10/102101
Full text from	free resource	CORE	https://core.ac.uk/reader/29183924?utm_source=linkout
	free resource	Strathprints - the University of Strathclyde	https://strathprints.strath.ac.uk/53113/