1. Encyclopedia of Polymer Science and Engineering,1985
2. Polyimides: Fundamentals and Applications;Sroog,1996
3. PMR-15 Polyimide/graphite fibre composite blade;Cavana,1976
4. W. M. Edwards and I. M. Robertson, U.S. Patent 2, 710, 853, 1955.
5. Polyimides: Fundamentals and Applications,1996