Name	Info	Provider	Link
	free resource	scite Smart Citations	https://scite.ai/reports/28456172
	subscription/membership/fee required	Silverchair Information Systems	https://pubs.aip.org/aip/cha/article-lookup/doi/10.1063/1.4979281
	free resource	Spiral, Imperial College Digital Repository	http://hdl.handle.net/10044/1/49741