https://www.iareporter.com/articles/crypto-company-lodges-treaty-arbitration-against-bulgaria/ (requires subscription)
https://globalarbitrationreview.com/article/crypto-exchange-brings-icsid-claim-against-bulgaria (requires subscription)
https://www.reuters.com/technology/crypto-lender-nexo-seeks-3-bln-damages-bulgaria-over-aborted-investigation-2024-01-24/