https://globalarbitrationreview.com/article/firtash-claim-against-ukraine-comes-light (requires subscription)
https://www.energychartertreaty.org/details/article/ostchem-holding-ltd-v-ukraine-scc/
https://www.iareporter.com/articles/scc-arbitration-against-ukraine-resumes-tribunal-is-now-in-place/ (requires subscription)