1. Adam, N., Avar, G., Blankenheim, H., Friederichs, W., Giersig, M., Weigand, E., Halfmann, M., Wittbecker, F.W., Larimer, D.R., Maier, U., Meyer-Ahrens, S., Noble, K.L. & Wussow, H.G. 2005. Ullmann's Encyclopedia of Industrial Chemistry – Polyurethanes. Wenheim: Wiley-VCH, Vol. 29, pp. 545–604.
2. Effect of UV and hygrothermal aging on the mechanical performance of polyurethane elastomers
3. Analytical characterization of polymers used in conservation and restoration by ATR-FTIR spectroscopy
4. Beamson, G. & Briggs. D. 1992. High Resolution XPS of Organic Polymers, 1st ed. New York: Wiley, pp. 196 and 210.
5. Billmeyer, F. W. 1984. Textbook of Polymer Science, 3rd ed. New York: Wiley, pp. 416–7.