D’Alessandro, W., A. L. Gagliano, K. Kyriakopoulos, and F. Parello. “Hydrothermal Methane Fluxes from the Soil at Lakki Plain (Nisyros Island, Greece)”. Bulletin of the Geological Society of Greece, vol. 47, no. 4, Jan. 2013, pp. 1920-8, doi:10.12681/bgsg.10953.