@unpublished{GorensteinKostyukStoeckeretal.2005,
  author  = {Mark I. Gorenstein and Andriy P. Kostyuk and Horst St{\"o}cker and Walter Greiner},
  title   = {Open charm enhancement in Pb + Pb collisions at SPS},
  institution = {Physik},
  year    = {2005},
}