Name	Info	Provider	Link
	free resource	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/S0032-5791(19)39447-7
	free resource	scite Smart Citations	https://scite.ai/reports/23960118
SILVA SSU Database	free resource	SILVA	http://www.arb-silva.de/search/show/ssu/pubid/23960118
	subscription/membership/fee required	Silverchair Information Systems	https://academic.oup.com/ps/article-lookup/doi/10.3382/ps.2012-02935