Vers une commande multivariable sans mod\`ele
  A control strategy without any precise mathematical model is derived for linear or nonlinear systems which are assumed to be finite-dimensional. Two convincing numerical simulations are provided. 
Michel Fliess (INRIA Futurs, LIX), C\'edric Join (INRIA Futurs, CRAN),   Mamadou Mboup (INRIA Futurs), Hebertt Sira-Ramirez