1. XIII. Mitteilung: , , Liebigs Ann. Chem. 1990, 57.
2. Diplomarbei, Univ. Marburg 1989.
3. Solvents and Solvent Effects in Organic Chemistry, second, completely revised and enlarged edition, S. 288 ff. und S. 363 ff., VCH Verlagsgesellschaft, Weinheim 1988.
4. Über die Thermochromie von Pyridinium-N-phenol-betainen!
5. 4b) — , , Bull. Soc. Chim. Fr 1987, 125.