1. N. A. Adrova, M. I. Bessonow, L. A. Laius and A. P. Rudakov, Polyimides new class of thermostable polymers (in Russian), Nauka, Leningrad, 1968, p. 248.
2. M. M. Koton, M. I. Bessonov and Yu. N. Sazanov, Plast, massy, 1981, n5, 22–26.
3. M. I. Bessonov, M. M. Koton, V. V. Kudrjavtzev and L. A. Laius, Polyimides-class of thermostable polymers (in Russian), Nauka, Leningrad, 1983, p. 327.
4. Polyimides, Synthesis, Characterization and Application, Vol. 1, 2; Ed. by K. L. Mittal, Plenum Press, N. Y., L. 1984.
5. A. N. Fraser, High Temperature Presistant Polymers, Intersci. Publ., N.Y., L. Syd., p. 297.