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@TECHREPORT{Leibfried:811442,
      author       = {Leibfried, G. and Ludwig, W.},
      title        = {{Z}ur {A}diabasie der {S}challausbreitung in {K}ristallen},
      volume       = {8},
      number       = {Juel-0008-RW},
      address      = {Jülich},
      publisher    = {Kernforschungsanlage Jülich Zentralbibliothek, Verlag},
      reportid     = {FZJ-2016-03914, Juel-0008-RW},
      series       = {Berichte der Kernforschungsanlage Jülich},
      pages        = {10 p.},
      year         = {1960},
      abstract     = {lt is shown that the propagation of sound is an adiabatic
                      process, and that thesound velocities are determined by the
                      adiabatic elastic data and the density in thefamiliar way.
                      The proof is analogous to that in simple monoatomic gases
                      andtakes anharmonic effects fully into account.},
      cin          = {PRE-2000},
      cid          = {I:(DE-Juel1)PRE2000-20140101},
      pnm          = {899 - ohne Topic (POF3-899)},
      pid          = {G:(DE-HGF)POF3-899},
      typ          = {PUB:(DE-HGF)3 / PUB:(DE-HGF)29},
      url          = {https://juser.fz-juelich.de/record/811442},
}