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ONIX for DOI metadata schema defines the XML format of the message requested by mEDRA system to register DOIs, showing the list of metadata concerning the object to be identified.

According to the ONIX for DOI metadata schema, you can register DOIs on Monographs, Monographic Chapters, Serial Articles, Serial Titles and Serial Issues.

The XML schema is encoded according to ONIX syntax. ONIX (Online Information Exchange) is the most authoritative standard communication format for content industry, created and regularly updated by EDItEUR, the international group coordinating the development of the standards for electronic commerce in book and serials industries.

ONIX for DOI metadata schema, jointly developed by mEDRA and EDItEUR in collaboration with Nielsen Book Data (the DOI Registration Agency for UK) has been formally endorsed by EDItEUR as the official ONIX format for DOI registration and it has newly been adopted by OPOCE, the Office for Official Publications of the European Communities.

The latest issue of ONIX for DOI metadata schema, version 2.0., is now available. The new release is fully backwards compatible with the previous one (1.1), but thanks to the inclusion of new metadata elements it allows a richer description of publications and, for Italian customers only, the deposit of the citations list to join CrossRef services via mEDRA.