1. H. R. Lubowitz, U.S. Pat. 3,528,950 (1970).
2. Polyimide structure–property relationships. II. Polymers from isomeric diamines
3. T. L. St. Clair, A. K. St. Clair, and E. N. Smith, paper presented at American Chemical Society Meeting, San Francisco, Calif., August 1976;
4. Polym. Preprints, 17(2), 359 (1976).
5. A. L. Landis, N. Bilow, R. H. Boschan, R. E. Lawrence, and T. J. Aponyi, papers presented at American Chemical Society Meeting, Atlantic City, N.J., September 13, 1974;