@unpublished{HoehnePuehlhoferStock2005,
  author  = {Claudia H{\"o}hne and Falk P{\"u}hlhofer and Reinhard Stock},
  title   = {System-size dependence of strangeness production in high-energy A+A collisions and percolation of strings},
  institution = {Physik},
  year    = {2005},
}