Name	Info	Provider	Link
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=16687022.ui
	subscription/membership/fee required	Springer	https://dx.doi.org/10.1381/096089206776945011
Full text from	free resource	CORE	https://core.ac.uk/reader/53840360?utm_source=linkout