https://www.iareporter.com/arbitration-cases/shell-v-nigeria/ (requires subscription)
https://globalarbitrationreview.com/shell-shell-out-in-nigerian-oil-spill-dispute (requires subscription)
https://www.iareporter.com/articles/west-africa-round-up-updates-on-arbitration-related-news-involving-gabon-the-central-african-republic-nigeria-and-sierra-leone/ (requires subscription)