1. Cassidy, P.E. “Thermally stable polymers”, Marcel Dekker, New York, 1980, p.94
2. Wilson, D., Stenzenberger, H.D. and Hergenrother, P.M., “Polyimides”, Blackie, London, 1990, p.58
3. Hergenrother, P.M., Watson, K.A., Smith, J.G., Connell, J.W. and Yokota, R., Polymer, 2002, 43: 5077
4. Ghosh, M.K. and Mittal, K.L., “Polyimides: fundamentals and applications”, Marcel Dekker, New York, 1996, p.1
5. Eastmond, G.C., Gibas, M. and Paprotny, J., Eur. Polym. J., 1999, 35: 2097