@article{etna_vol58_pp402-431,
  author  = {Tim Mitchell},
  title   = {Fast computation of Sep$_\lambda$ via interpolation-based globality certificates},
  journal = {Electron. Trans. Numer. Anal.},
  volume  = {58},
  year    = {2023},
  pages   = {402--431},
  doi     = {10.1553/etna_vol58s402},
}