Bertolotti, G. Intangible materials. 63-70. Recuperado de https://www.scopus.com/inward/record.uri?eid=2-s2.0-84878707570&partnerID=40&md5=c5aaeb67ed524fcea469660451701c25 G. BertolottiCopyleft Creativeness Folklore imitation Intangible cultural heritage Mystical body