Where material comes from a project of another foreign school in Athens, the application should be accompanied by a letter from that school giving permission to the applicant to study and/or publish the material. If the applicant is a student, a letter of support is required from their research supervisor.
There is usually no difficulty in gaining access to published material, although it is advisable where possible to consult the original copyright holder or excavator before proceeding. Permission to study or to publish unpublished objects or material from an incompletely published excavation is rarely given, either by the Greek Ministry or by the foreign schools. Preliminary reports of finds and excavations such as those presented in the journals of the Athens Archaeological Society and the Ministry of Culture (Αρχαιολογικόν Δελτίον) are not considered to be definitive publications.