@misc{LamartinaZaghini2008,
  author    = {Serena Lamartina and Andrea Zaghini},
  title     = {Increasing public expenditures: Wagner's Law in OECD countries},
  booktitle = {Center for Financial Studies (Frankfurt am Main): CFS working paper series ; No. 2008,13},
  institution = {Center for Financial Studies (CFS)},
  series    = {CFS working paper series},
  number    = {2008, 13},
  type      = {workingpaper},
  year        = {2008},
}