Correction to: The European Volcano Observatories and their use of the aviation colour code system

Sara Barsotti; Simona Scollo; Giovanni Macedonio; Alicia Felpeto; Aline Peltier; Georgios Vougioukalakis; Elske de Zeeuw van Dalfsen; Lars Ottemöller; Adriano Pimentel; Jean-Christophe Komorowski; Susan Loughlin; Rita Carmo; Mauro Coltelli; Jordane Corbeau; Charlotte Vye-Brown; Mauro Di Vito; Jean-Bernard de Chabalier; Teresa Ferreira; Fabrice R. Fontaine; Arnaud Lemarchand; Rui Marques; Joana Medeiros; Roberto Moretti; Melissa Anne Pfeffer; Jean-Marie Saurel; Ivan Vlastelic; Kristín Vogfjörd; Samantha Engwell; Giuseppe Salerno