Herlem, Michel (1977). Are reactions in superacid media due to protons or to powerful oxidising species such as SO3 or SbF5?. Pure & Applied Chemistry49: 107–113. DOI: 10.1351/pac197749010107. Geraadpleegd op 14 mei 2007.
George A. Olah, Schlosberg RH (1968). Chemistry in Super Acids. I. Hydrogen Exchange and Polycondensation of Methane and Alkanes in FSO3H–SbF5 ("Magic Acid") Solution. Protonation of Alkanes and the Intermediacy of CH5+ and Related Hydrocarbon Ions. The High Chemical Reactivity of "Paraffins" in Ionic Solution Reactions. Journal of the American Chemical Society90: 2726–7. DOI: 10.1021/ja01012a066.