1. Polypropylene Handbook: Polymerization, Characterization, Properties, Processing, Applications, Moore, E.P., Jr., Ed., Munich: Hanser, 1996.
2. Tripathi, D., Practical Guide to Polypropylene, Shawbury, Shrewsbury, Shropshire: Smithers Rapra, 2002.
3. Polypropylene: An A-Z Reference, Karger-Kocsis, J., Ed., Dordrecht: Kluwer, 1999.
4. Andreassen, E., Polypropylene: An A-Z Reference, Karger-Kocsis, J., Ed., Dordrecht: Kluwer, 1999, p. 320.
5. Fintzou, A.T., Badeka, A.V., Kontominas, M.G., and Riganakos, K.A., Radiat. Phys. Chem., 2006, vol. 75, p. 87.