@article{EsserWyschkonSchmidtetal.2008,
  author    = {G{\"u}nter Esser and Anne Wyschkon and Martin H. Schmidt and Bernhard Blanz and Wolfgang Ihle},
  title     = {Ein Entwicklungsmodell des Substanzmissbrauchs im fr{\"u}hen Erwachsenenalter},
  doi       = {10.1026/0942-5403.17.1.31},
  url       = {http://psycontent.metapress.com/content/0942-5403},
  year      = {2008},
}