Name	Info	Provider	Link
	subscription/membership/fee required	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/S0960-894X(13)01417-0
	free resource	scite Smart Citations	https://scite.ai/reports/24374278
	free resource	Spiral, Imperial College Digital Repository	http://hdl.handle.net/10044/1/12642