@phdthesis{43,
  author = {Francesco Sottile},
  title = {Response functions of semiconductors and insulators: from the Bethe-Salpeter equation to time-dependent density functional theory},
  year = {2003},
  volume = {PhD in Physics},
  publisher = {Ecole Polytechnique},
  address = {Ecole Polytechnique, Palaiseau},
}