1. L. Lin, G.S. Blackman, R.R. Matheson, in: Proceedings of the 25th International Conference on Organic Coatings, Athens, July 5–9, 1999.
2. J.L. Gerlock, Discussion of the Paper at Second International Symposium Service Life Prediction Methodology and Metrologies, Monterey, CAL, November 14–19, 1999.
3. U. Biskup, Th. Engbert, Congress Paper 57 of the Fourth Nürnberg Congress, April 7–9, 1997.
4. Th. Engbert, M. Bock, Th. Klimmasch, U. Biskup, High solids 2K-PUR clearcoats — studies on scratch and mar resistance, in: Proceedings of the 24th FATIPEC Congress, Interlaken, Vol. B, June 8–11, 1998, p. 123.