@article{CTT100734260,
  author = {Shinya Nishibata and Masashi Ohnawa and Masahiro Suzuki},
  title = {The mathematical justication of the Bohm criterion in plasma physics},
  journal = {Advanced Studies in Pure Mathematics},
  year = 2015,
}

@article{CTT100734255,
  author = {Shinya Nishibata and Masashi Ohnawa and Masahiro Suzuki},
  title = {Nonlinear stability of boundary layer solutions to the Euler-Poisson equations in plasma physics},
  journal = {Hyperbolic Problems: Theory, Numerics, Applications},
  year = 2014,
}

@article{CTT100734248,
  author = {Shinya Nishibata and Masahiro Suzuki and Masashi Ohnawa},
  title = {Asymptotic stability of boundary layers to the Euler-Poisson equations arising in plasma physics},
  journal = {SIAM  J.  Math. Anal.},
  year = 2012,
}