Warnach, S. (02 July 2019). Variation of the BrO/SO2 molar ratio in the plume of Tungurahua volcano between 2007 and 2017 and its relationship to volcanic activity. Frontiers in Earth Science, 7, . doi:10.3389/feart.2019.00132

"Variation of the BrO/SO2 molar ratio in the plume of Tungurahua volcano between 2007 and 2017 and its relationship to volcanic activity / Simon Warnach, Nicole Bobrowski, Silvana Hidalgo, Santiago Arellano, Holger Sihler, Florian Dinger, Peter Luebcke, Jean Battaglia, Alexander Steele, Bo Galle, Ulrich Platt and Thomas Wagner" Frontiers in Earth Science .

Warnach, Simon. "Variation of the BrO/SO2 Molar Ratio in the Plume of Tungurahua Volcano between 2007 and 2017 and Its Relationship to Volcanic Activity." Frontiers in Earth Science 7 (02 July 2019).