@incollection{Sommermann2018,
  author    = {Karl-Peter Sommermann},
  title     = {Citizen Participation in Multi-level Democracies: An Introduction},
  series = {Citizen Partizipation in Multi-level Democracies},
  editor    = {Cristina Fraenkel-Haeberle and Sabine Kropp and Francesco Palermo and Karl-Peter Sommermann},
  publisher = {Brill Nijhoff},
  address   = {Leiden},
  isbn      = {978-90-04-28793-8},
  pages     = {1 -- 12},
  year      = {2018},
  abstract  = {.},
  language  = {en}
}