author        = "Büyükakpınar, P. and Cannata, A. and Cannavo, F. and
                       Carbone, D. and De Plaen, R.S. and Di Grazia, G. and King,
                       T. and Lecocq, T. and Liuzzo, M. and Salerno, G.",
      title         = "{Insights into the sources of seismic velocity changes at
                       Mt. Etna volcano by comparison with other geophysical and
                       geochemical parameters: the 2018 eruption case study}",
      month         = "Dec",
      year          = "2021",