Minimality of the horocycle flow on laminations by hyperbolic surfaces   with non-trivial topology
  We consider a minimal compact lamination by hyperbolic surfaces. We prove that if it admits a leaf whose holonomy covering is not topologically trivial, then the horocycle flow on its unitary tangent bundle is minimal. 
Fernando Alcalde, Fran\c{c}oise Dal'Bo, Matilde Mart\'inez and Alberto   Verjovsky
math.DS