EconStor provides a basis for the free publication of academic literature in economics. Any research facility and any scholar may publish and permanently preserve relevant publications in economics on EconStor under the terms of Open Access. The self-uploading process on EconStor is intended mainly for entering texts already published and/or reviewed as postprints (author’s versions, final drafts) or original documents (publishers’ versions). You can also publish other types of documents (working or discussion papers and other preprints, theses, conference proceedings, research reports, expert opinions, reviews etc.) as long as they are not contained within series fully provided and maintained by EconStor. Harvested from : http://www.econstor.eu/dspace/