@article{DH08,
  author   = {W.~Dreyer and M.~Herrmann},
  title    = {Numerical experiments on the modulation theory for the nonlinear atomic chain},
  journal  = {Physica {D}},
  volume   = {237},
  NUMBER   = {2},
  pages    = {255-282},
  year     = {2008}
}