Starting with the article entitled "An estimation of the controllability time for single-input systems on compact lie groups" by A. Agrachev et al., ESAIM: Control, Optimisation and Calculus of Variations will be selecting certain papers as "Highlight papers" from time to time.

We believe that these papers will be of particular interest to our readers due to the topic or approach pursued or perhaps the reach and implications of their results. "Highlight papers" will be briefly introduced by one of the Editors, and will be available free of charge on the ESAIM: Control, Optimisation and Calculus of Variations website.