Electronic structure of Lewis acid sites on high surface area aluminium fluorides: a combined XPS and ab initio investigation - Makarowicz, A; Bailey, CL; Weiher, N; Kemnitz, E; Schroeder, SLM; Mukhopadhyay, S; Wander, A; Searle, BG; Harrison, NM (PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2009)