
https://static.europeanchamber.com.cn/upload/medianews/attachments/European_Chamber_Trade_War_Survey_Results_and_Analysis_Fall_2019[24].pdf

http://www.iata.org/publications/economic-briefings/value-of-air-cargo-2016-summary.pdf

https://www.greens-efa.eu/en/article/press/austrian-government-rejects-eu-mercosur-agreement/