Mapping and evaluating kinematics and the stress and strain field at active faults and fissures: a comparison between field and drone data at the NE rift, Mt Etna (Italy) oleh A. Tibaldi, A. Tibaldi, N. Corti, E. De Beni, F. L. Bonali, F. L. Bonali, S. Falsaperla, H. Langer, M. Neri, M. Cantarero, D. Reitano, L. Fallati