Name	Info	Provider	Link
	subscription/membership/fee required	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/S0736574897000270
	subscription/membership/fee required	Wiley	https://doi.org/10.1016/s0736-5748(97)00027-0
Cited by Patents in	free resource	The Lens - Patent Citations	https://www.lens.org/lens/search/patent/list?q=citation_id:9402227