Ohba, Takeshi, Kenji Nogami, Jun-ichi Hirabayashi, Takeshi Sawa, Kohei Kazahaya, Noritoshi Morikawa, and Michiko Ohwada. “Chemical and Isotopic Composition of Fumarolic Gases at Iwate Volcano, Japan, During and After Seismic Activity in 1998: Implications for the Modification of Ascending Volcanic Gases”. Annals of Geophysics 54, no. 2 (June 30, 2011). Accessed March 28, 2024. https://www.annalsofgeophysics.eu/index.php/annals/article/view/5182.