@article{JWSP-DA-GS:24d,
  author =	 {J. W. Simpson-Porco and D. Astolfi and G. Scarciotti},
  title =	 {Steady-State Cascade Operators and their Role in Linear Control, Estimation, and Model Reduction Problems},
  journal =	 tac,
  year =	 2026,
  volume = {71},
  number = {1},
  pages = {4--19},
  pdf =	 {http://www.control.utoronto.ca/~jwsimpson/papers/2024d.pdf},
  keywords = {Linear Control, Nonlinear Control},
  doi = {10.1109/TAC.2025.3587949},
}