1. “Global Butadiene Market Overview (2014-2025)” can be found under https://prismaneconsulting.com/blog_details/101/Global-Butadiene-Market-Overview-(2014-2025) 2019.
2. “Butadiene Market – Growth Trends and Forecast (2020 - 2025)” can be found under https://www.mordorintelligence.com/industry-reports/butadiene-market 2019.
3. “Butadiene Chemical Economics Handbook” can be found under https://ihsmarkit.com/products/butadiene-chemical-economics-handbook.html 2019.
4. “Asia/World Energy Outlook 2013” can be found under https://eneken.ieej.or.jp/en/whatsnew/413.html 2014.