Name	Info	Provider	Link
	free resource	Optica Publishing Group	https://opg.optica.org/abstract.cfm?URI=oe-19-21-19907
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/21996999/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/21996999
Cited by Patents in	free resource	The Lens - Patent Citations Database	https://www.lens.org/lens/search/patent/list?q=reference_cited.nlp.ids.pmid:21996999