Name	Info	Provider	Link
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=18713244.ui
	free resource	Wiley	https://onlinelibrary.wiley.com/doi/10.1111/j.1420-9101.2008.01582.x
	free resource	Silverchair Information Systems	https://academic.oup.com/jeb/article-lookup/doi/10.1111/j.1420-9101.2008.01582.x