@book{HooftHolsteinMakrietal.2001,
  author    = {Hooft, Gerard and Holstein, Barry and Makri, Nancy and Duru, Ismail and Ruffini, Remo and Janke, Wolfhard and Pelster, Axel and Schmidt, Hans-J{\"u}rgen and Bachmann, Michael},
  title     = {Fluctuating paths and fields : festschrift dedicated to Hagen Kleinert on the occasion of his 60the birthday},
  publisher = {World Scientific},
  address   = {River Edge, NJ},
  isbn      = {981-02-4648-X},
  pages     = {871 S.},
  year      = {2001},
  language  = {en}
}
@book{Schmidt1998,
  author    = {Schmidt, Hans-J{\"u}rgen},
  title     = {Current topics in mathematical cosmology : proceedings of the International Seminar ; Potsdam, Germany 30 March 4 April 1998},
  editor    = {Rainer, Martin},
  publisher = {World Scientific},
  address   = {Singapore [u.a.]},
  isbn      = {981-023627-1},
  pages     = {XVII, 484 S.},
  year      = {1998},
  language  = {en}
}
@book{Schmidt1995,
  author    = {Schmidt, Hans-J{\"u}rgen},
  title     = {An alternate Hamiltonian formulation of fourth-order theories},
  address   = {Potsdam},
  year      = {1995},
  language  = {en}
}
@book{Schmidt1995,
  author    = {Schmidt, Hans-J{\"u}rgen},
  title     = {How to measure spatial distances?},
  series = {Preprint / Universit{\"a}t Potsdam, Institut f{\"u}r Mathematik},
  volume    = {1995, 10},
  journal   = {Preprint / Universit{\"a}t Potsdam, Institut f{\"u}r Mathematik},
  publisher = {Univ.},
  address   = {Potsdam},
  pages     = {4 Bl.},
  year      = {1995},
  language  = {en}
}
@book{SchmidtMignemi1995,
  author    = {Schmidt, Hans-J{\"u}rgen and Mignemi, Salvatore},
  title     = {Two-dimensional higher-derivative gravity and conformal transformations},
  year      = {1995},
  language  = {en}
}
@book{SchmidtKluske1995,
  author    = {Schmidt, Hans-J{\"u}rgen and Kluske, Sabine},
  title     = {Towards a no hair theorem for higher order gravit},
  year      = {1995},
  language  = {en}
}
@book{Schmidt1995,
  author    = {Schmidt, Hans-J{\"u}rgen},
  title     = {Consequences of the noncompactness of the Lorentz group},
  year      = {1995},
  language  = {en}
}
@book{SchmidtMohazzabRainer1995,
  author    = {Schmidt, Hans-J{\"u}rgen and Mohazzab, Masoud and Rainer, Martin},
  title     = {Deformations between Bianchi geometries in classical and quantum cosmology},
  series = {Report IPM},
  volume    = {1995, 91},
  journal   = {Report IPM},
  publisher = {IPM},
  address   = {Teheran},
  year      = {1995},
  language  = {en}
}
@book{Schmidt1995,
  author    = {Schmidt, Hans-J{\"u}rgen},
  title     = {Consequences of the noncompactness of the Lorentz group},
  series = {Preprint / Universit{\"a}t Potsdam, Institut f{\"u}r Mathematik},
  volume    = {1995, 09},
  journal   = {Preprint / Universit{\"a}t Potsdam, Institut f{\"u}r Mathematik},
  publisher = {Univ.},
  address   = {Potsdam},
  pages     = {7 Bl.},
  year      = {1995},
  language  = {en}
}
@book{Schmidt1994,
  author    = {Schmidt, Hans-J{\"u}rgen},
  title     = {Why do all the curvature invariants of a gravitational wave vanish?},
  series = {Preprint / Universit{\"a}t Potsdam, Institut f{\"u}r Mathematik},
  volume    = {1994, 03},
  journal   = {Preprint / Universit{\"a}t Potsdam, Institut f{\"u}r Mathematik},
  publisher = {Univ.},
  address   = {Potsdam},
  pages     = {7 Bl.},
  year      = {1994},
  language  = {en}
}