1. Berlin, A. A., Shutov, F. A., Zhintinkina, A. K.: Foam Based on Reactive Oligomers. Westport: Technomic, 1982
2. Zaks, Y. B., et al.: Plastmassy No 4, 59 (1976) (in Russian)
3. Kragis, I. G., et al.: Mekhanika Polymerov No 2, 346 (1977) (in Russian)
4. Berlin, A. A., Shutov, F. A.: Strengthened Gas-Filled Polymers. Moscow: Khimia, 1980 (in Russian)
5. Shutov, F. A.: USSR Conf. Chemistry and Technology of Polyurethanes, Vladimir USSR, 1979