Rihko-Struckmann, L., Ye, Y., Chalakov, L., Suchorski, Y., Weiß, H., & Sundmacher, K. (2006). Bulk and surface properties of a VPO catalyst used in an electrochemical membrane reactor: conductivity-, XRD,- TPO- and XPS-study. Catalysis Letters, 109(1-2), 89-96. doi:10.1007/s10562-006-0062-6.