@article{etna_vol64_pp1-22,
  author  = {Stefan Kindermann and Bernd Hofmann},
  title   = {Operator ordering by ill-posedness in Hilbert and Banach spaces},
  journal = {Electron. Trans. Numer. Anal.},
  volume  = {64},
  year    = {2025},
  pages   = {1--22},
  doi     = {10.1553/etna_vol64s1},
}