Quasiperiodic Sturmian words and morphisms
  We characterize all quasiperiodic Sturmian words: a Sturmian word is not quasiperiodic if and only if it is a Lyndon word. Moreover, we study links between Sturmian morphisms and quasiperiodicity. 
Florence Lev\'e (LaRIA), Gw\'ena\"el Richomme (LaRIA)