1. Comparative Politics and the Synthetic Control Method
2. The Economic Costs of Conflict: A Case Study of the Basque Country
3. About Trends Graphs. (2014). Google. https://support.google.com/trends/answer/4355164?hl=en
4. Boxell, L. & Steinert-Threlkeld, Z. (2019). Taxing dissent: The impact of a social media tax in Uganda (arXiv) .
5. Callanan, C., Dries-Ziekenheiner, H., Escudero-Pascual, A. & Guerra, R. (2010). Leaping over the firewall: A review of censorship circumvention tools. Freedom House. http://www.freedomhouse.org/sites/default/files/inlineimages/Censorship.pdf