Bibliographic Reference
Allard, P., Carbonnelle, J., Dajlevic, D., Le Bronec, J., Morel, P., Robe, M.C., Maurenas, J.M., Faivre-Pierret, R., Martin, D., Sabroux, J.C., Zettwoog, P. , 1991,
Eruptive and difuse emissions of CO2 from Mount Etna, Nature, vol.351, n.n.d., pp. 387-391, DOI:
10.1038/351387a0