Esser, T., Gewinner, S., Schöllkopf, W., Heine, N., Fagiani, M. R., Knorke, H., et al. (2015). Gas phase vibrational spectroscopy of small protonated water clusters measured into the terahertz spectral range (200-1200 cm−1). Talk presented at 114th General Assembly of the German Bunsen Society for Physical Chemistry. Bochum, Germany. 2015-05-14 - 2015-05-16.