@article{DzhunushalievSchmidt1999,
  author    = {Dzhunushaliev, Vladimir and Schmidt, Hans-J{\"u}rgen},
  title     = {2+2-decomposable solutions of weyl gravity},
  year      = {1999},
  language  = {en}
}
@article{DzhunushalievSchmidt1999,
  author    = {Dzhunushaliev, Vladimir and Schmidt, Hans-J{\"u}rgen},
  title     = {4D wormhole with signature change in the presence of extra dimensions},
  series = {General relativity and quantum cosmology : preprints gr-qc},
  volume    = {9908076},
  journal   = {General relativity and quantum cosmology : preprints gr-qc},
  year      = {1999},
  language  = {en}
}
@misc{Schmidt1999,
  author    = {Schmidt, Hans-J{\"u}rgen},
  title     = {Cercignani, C., Scaling limits and models in physical process; Basel, Birkh{\"a}user, 1998},
  year      = {1999},
  language  = {en}
}
@article{Schmidt1999,
  author    = {Schmidt, Hans-J{\"u}rgen},
  title     = {Editor{\"i}s note},
  year      = {1999},
  language  = {de}
}
@article{BachmannSchmidt1999,
  author    = {Bachmann, Michael and Schmidt, Hans-J{\"u}rgen},
  title     = {Period-doubling bifurcation in strongly anisotropic Bianchi I quantum cosmology},
  series = {General relativity and quantum cosmology : preprints gr-qc},
  volume    = {9912068},
  journal   = {General relativity and quantum cosmology : preprints gr-qc},
  year      = {1999},
  language  = {en}
}
@article{Schmidt1999,
  author    = {Schmidt, Hans-J{\"u}rgen},
  title     = {The classical solutions of two-dimensional gravity},
  year      = {1999},
  language  = {en}
}