http://ec.europa.eu/transport/sites/transport/files/pocketbook2016.pdf
https://corporateeurope.org/sites/default/files/attachments/recruitment_errors.pdf
https://cleanclothes.org/file-repository/underpaid-in-the-pandemic.pdf
https://www.brookings.edu/research/we-should-bail-out-airlines-during-the-coronavirus-pandemic-but-on-taxpayers-terms/?utm_campaign=Brookings%20Brief&utm_medium=email&utm_content=85010600&utm_source=hs_email