Open Archives Initiative -Protocol for Metadata Harvesting
If you are interested in metadata sharing, publishing and archiving, then OAI-PMH is for you. It is a standard way for other institutions to find, gather and share the materials in your ResCarta Web site.
COinS (ContextObjects in Spans) is a simple, ad hoc community specification for publishing OpenURL references in HTML. Or more simply a convention to embed bibliographic metadata in a line of HTML code.
ResCarta supports both of these metadata distribution systems