@article{CTT100810200,
  author = {Jan Brezina and Yoshiyuki Kagei},
  title = {Spectral properties of the linearized compressible Navier-Stokes equation around time-periodic parallel flow},
  journal = {J. Differential Equations},
  year = 2013,
}

@article{CTT100810204,
  author = {Jan Brezina and Yoshiyuki Kagei},
  title = {Decay properties of solutions to the linearized compressible Navier-Stokes equation around time-periodic parallel flow},
  journal = {Math. Models Meth. Appl. Sci.},
  year = 2012,
}