The discovery or rediscovery of an object often raises the question of its authenticity and attribution. It is then necessary to perform a search in a specific methodological framework. The archival, historical, technical and stylistic studies allow the discovery of indices essential to determine a provenance. Conversely, when works have disappeared and are only known to us by some testimony ; It is possible, through an investigation responding to the same methodological reasoning, to trace their trail and rediscover them in places sometimes unexpected.
Inventory and classification are means of research, of understanding and of valorization very performing. Highlighted by publications (catalogs, articles, books) and conferences, the art works then enter into an enriched corpus. They become references.