Journal Article
            Auinger, M.; Praig, V. G.; Linder, B.; Danninger, H.:  Grain boundary oxidation in iron-based alloys, investigated by 
18O enriched water vapour - The effect of mixed oxides in binary and ternary Fe–{Al, Cr, Mn, Si} systems. Corrosion Science 
96, pp. 133 - 143 (2015)