La re-création du passé: enjeux identitaires et mémoriels: approche socio-anthropologique de l'histoire vivante médiévale // [The recreation of the past: stakes in identity and memory: socio-anthropological approach of living medieaval history] Audrey. Tuaillon Demésy 2013 3 history outside academia identity medieval historiography and historical consciousness memory/forgetting reenactment