@article{KreuzerSeidelSchuessleretal.1989,
  author    = {Hans Kreuzer and Eberhard Seidel and Ulrich Sch{\"u}ssler and Martin Okrusch and Karl-Ludwig Lenz and Helmut Raschka},
  title     = {K-Ar geochronology of different tectonic units at the northeastern margin of the Bohemian Massif},
  year      = {1989},
}