@unpublished{Penisson2011,
  author  = {Sophie P{\´e}nisson},
  title   = {Continuous-time multitype branching processes conditioned on very late extinction},
  institution = {Institut f{\"u}r Mathematik},
  series    = {Mathematische Statistik und Wahrscheinlichkeitstheorie : Preprint},
  number    = {2009, 06},
  year    = {2011},
}