The document [1] describes an updated version of the mapping of the EAD to the CIDOC CRM version 4.2.2. It is the thechnical report of DELOS WP5-Task 5.5 "Ontology Driven Interoperability". It was also presented in Proceedings of the 10th International Conference on Asian Digital Libraries, ICADL-2007, Hanoi, Vietnam, December 2007, Lecture Notes in Computer Science (LNCS) No. 4822: Springer-Verlag, 2007, pp. 165-175. It is available at [2].
The document [3] describes the mapping of the The EAD to the CIDOC CRM version 3.0 and the Agios Pavlos extensions.