https://globalarbitrationreview.com/article/us-investor-makes-good-threat-against-poland (requires subscription)
https://www.iareporter.com/articles/poland-reportedly-involved-in-treaty-arbitration-with-private-equity-fund-over-new-pharmaceutical-law/ (requires subscription)
https://www.intellinews.com/poland-facing-arbitration-over-warburg-pincus-complaint-about-rules-limiting-pharmacies-323162/