@MASTERSTHESIS{leifeld2007policy,
  author = {Leifeld, Philip},
  title = {{Policy Networks. A Citation Analysis of the Quantitative
    Literature}},
  year = {2007},
  school = {Department of Politics and Management, University of Konstanz},
  type = {MA thesis},
  url = {http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-26631},
  address = {Konstanz},
  month = {April}
}