Approximation forte pour les espaces homog\`enes de groupes semisimples   sur le corps des fonctions d'une courbe alg\'ebrique complexe
  Let K be the function field of a curve over the complex field. Let X be a homogeneous space of a semisimple linear algebraic group. Strong approximation holds for X outside any finite nonempty set of places of K. Strong approximation fails for tori over K. 
Jean-Louis Colliot-Th\'el\`ene
math.AG math.GR