AUTHOR=Acocella Valerio TITLE=Great challenges in volcanology: how does the volcano factory work? JOURNAL=Frontiers in Earth Science VOLUME=2 YEAR=2014 URL=https://www.frontiersin.org/journals/earth-science/articles/10.3389/feart.2014.00004 DOI=10.3389/feart.2014.00004 ISSN=2296-6463