1. Department of Classics, Sapienza University of Rome, 00185 Rome, Italy
2. Interdepartmental Center of Research DigiLab, Sapienza University of Rome, 00185 Rome, Italy
3. C.N.R. Istituto di Cristallografia—Area della Ricerca Roma 1, Via Salaria Km 29300, 00015 Monterotondo, RM, Italy