US Patent 3385911, MKI C 08 F 2/02, C 08 F 2/36 (1965).
2.
US Patent 3856606, MKI C 07 C 409/00, C 07 C 409/40, C 07 F 7/02, C 07 F 7/08, C 08 F 4/32 (1974).
3.
SU 507605, MKI C 08 L 83/04 (1976).
4.
SU 504817, MKI C 08 L 83/04 (1976).
5.
Russian Patent 2336285, MKI C 08 G 77/16, C 08 K 5/5419 (2006).
6.
VinogradovA.A., Proceedings of the 1st International Scientific and Practical Conference “Investigation, Development, and Application of High-tech Methods in Industry”. Vol. 3, St Petersburg, p. 298 (2005).