@conference{657,
  keywords = {Invited},
  author = {Lucia Reining},
  title = {How to describe exchange and correlation effects in the response properties of valence electrons? Answers from TDDFT and Many-Boby Perturbation Theory},
  year = {2004},
  journal = {Workshop and School Time-Dependent Density-Functional Theory: Prospects and Applications , Benasque (Spain)},
  month = {08-09},
}