Stability margins and model-free control: A first look
  We show that the open-loop transfer functions and the stability margins may be defined within the recent model-free control setting. Several convincing computer experiments are presented including one which studies the robustness with respect to delays. 
Michel Fliess (LIX, AL.I.E.N.), C\'edric Join (AL.I.E.N., INRIA Lille   - Nord Europe, CRAN)
math.OC