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For those content providers that already provide metadata files to knowledge base developers (for example, in OAI or ONIX-SOH format), this set of recommendations can be used as a guide to review their current provision with a view to incorporating missing mandatory fields recommended in this document. It may be that current methods of file transfer and naming conventions adopted by these content providers is adequate and no change may be required to file transfer and naming.

For those content providers that don’t send metadata files relating to their content already, these recommendations can be taken as a full set of implementation guidelines.

Content providers who are participants in CrossRef can contact CrossRef for assistance in some areas of metadata exchange; CrossRef already manages nearly all of the information defined below, and is exploring options for serving as a central hub to distribute its members’ information to metadata users.