@unpublished{SoffBassBleicheretal.1999,
  author  = {Sven Soff and Steffen A. Bass and Marcus Bleicher and Larissa Bravina and Mark I. Gorenstein and Eugene E. Zabrodin and Horst St{\"o}cker and Walter Greiner},
  title   = {Strangeness enhancement in heavy ion collisions - evidence for quark-gluon-matter?},
  institution = {Physik},
  year    = {1999},
}