1. Apple and Google. “Exposure Notification Privacy-preserving Analytics (ENPA) White Paper”. Apr 2021.
2. L. Baumgärtner et al. “Mind the GAP: Security & Privacy Risks of Contact Tracing Apps”. In: 19th TRUSTCOM (Guangzhou, China, Dec. 29, 2020–Jan. 1, 2021). IEEE, 2020, pp. 458–467.
3. J. Bay. “Automated contact tracing is not a coronavirus Panacea”. Medium (Apr 11, 2020).
4. J. E. Cohen, W Hartzog, and L. Moy. “The dangers of tech-driven solutions to COVID-19”. Brookings TechStream (June 17, 2020).
5. P.-O Dehaye. “Inferring distance from Bluetooth signal strength: a deep dive”. Medium (May 19, 2020).