As mentioned earlier Confederation of Open Access Repositories (COAR) published the interesting survey "The Current State of Open Access Repository Interoperability (2012)". Now it's time for a free online workshop dealing with the core value of repositories namely: Interoperability. The guest speaker will be Eloy Rodrigues (Univerisity of Minho, Portugal) chair of COAR Working group on Repository Interoperability. 

Read more and sign up for the event here: Towards repository interoperability - free online workshop