1. “Heat Resistant Polymers,” in Kirk Othmer Encyclopedia of Chemical Technology, 12, 3rd Ed., pp. 203-25, John Wiley & Co., New York (1980).
2. “Polyamides, Aromatic,” in Encyclopedia of Polymer Sci., 11, pp. 381-409, John Wiley & Sons, Inc., New York (1988).
3. and U.S. Pat. 2,710,853 (1955), assigned to E. I. duPont de Nemours and Company.
4. and U.S. Pat. 2,900,369 (1959), assigned to E. I. duPont de Nemours and Company.
5. and U.S. Pat. 2,880,230 (1959), assigned to E. I. duPont de Nemours and Company.