Hävecker, M., Knop-Gericke, A., Fait, M., Mayer, R. W., & Schlögl, R. (2001). In situ characterisation of the relevant surface state of vanadium-phosphorus-oxide (VPO) catalysts for n-butane oxidation. Talk presented at Europacat V. Limerick. 2001-09-02 - 2001-09-07.