1. Sheller JA, Mod Plast Int 1985; August: 42–6.
2. Gorbatkina JA. Adhesion in reinforced polymer systems. Moscow: Chimia, 1987. p. 191.
3. Sing K, Dreg S. Absorbtion, surface, porometry. Moscow, 1984.
4. Pilipovsky BI, Jartzev IK. Polypropylene. Leningrad: Chimia, 1967. p. 316.
5. USA patent No.4429064, 29, June 1982.