@misc{zhou2026globaloptimalitycertificationpde,
  author = {Zhou, Duo},
  title  = {{Global Optimality Certification for Spatiotemporal Physics and PDEs}},
  year   = {2026},
  url    = {https://www.duo-zhou.com/blog/global-optimality-certification-pde/},
  note   = {Research note}
}