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2. A. J. East , Polyesters, Thermoplastics , in Kirk-Othmer Encyclopedia of Chemical Technology , John Wiley & Sons , New York , 2006 , vol. 20 , pp. 31–95
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4. Smithers Pira, Demand for PET Packaging Material to reach $60 billion by 2019 , accessed March 2018. http://www.smitherspira.com/news/2014/april/demand-for-pet-packaging-material-in-2019
5. Smithers Pira, The Future of PET Packaging to 2021 , accessed March 2018. https://www.smitherspira.com/industry-market-reports/packaging/pet-packaging-to-2021