@unpublished{KleinZitt2011,
  author  = {Markus Klein and Pierre-Andr{\´e} Zitt},
  title   = {Resonances for a diffusion with small noise},
  institution = {Institut f{\"u}r Mathematik},
  series    = {Mathematische Statistik und Wahrscheinlichkeitstheorie : Preprint},
  number    = {2008, 02},
  year    = {2011},
}