Type of practice:
Open Access Models are used for the purpose of the Impact Assessment on the access to and preservation of scientific information . The corresponding IA Report (http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=SWD:2012:0222:FIN:EN:PDF) gives an account of this application.
Under the 'Gold Open Access' model, the costs of publishing are covered by authors rather than by reader subscriptions. In the 'Green Open Access' model, the journal article is made available for free on the internet, either on an individual webpage of the author or within an institutional repository.