1. C. Riedel, J. M. Crafts, J. Chem. Soc.
1877, 32,725.
2. C. C. Price, Org. React.
1946, 3, 1–82.
3. G. A. Olah, Friedel-Crafts and Related Reactions, Wiley, New York, 1963–1964 Bd. 1 und 2.
4. R. Taylor, Electrophilic Aromatic Substitution, Wiley, New York, 1990, S. 187–203.
5. G. A. Olah, S. J. Kuhn, J. Am. Chem. Soc.
1958, 80, 6541–6545.