Name	Info	Provider	Link
	subscription/membership/fee required	Optica Publishing Group	https://opg.optica.org/abstract.cfm?URI=ol-42-13-2419
	free resource	Bicocca Open Archive UniMiB (BOA)	https://hdl.handle.net/10281/169946
	free resource	scite Smart Citations	https://scite.ai/reports/28957248