6Galli P, Vecellio G. Polyolefins:The most promising large-volume materials for the 21st century[J]. J. Polym. Sci. Part A: Polym. Chem., 2004, 42: 396-415.
7Paolo C. The discovery of isotactic polypropylene and its impact on pure and applied science[J]. J. Polym. Sci. Part A: Polym. Chem., 2004, 42: 391-395.