https://www.socialeurope.eu/eu-member-state-determined-others-greek-tragedy
https://www.feps-europe.eu/attachments/publications/our_european_future_ipdf%201.pdf
https://www.iedonline.eu/download/2017/IED-REPORT-Bratislava-2017.pdf
http://cep.lse.ac.uk/pubs/download/brexit11.pdf