@misc{SchnabelWagner2005,
  author    = {Claus Schnabel and Joachim Wagner},
  title     = {Who are the workers who never joined a union? Empirical evidence from Germany},
  institution = {Fr{\"u}here Fachbereiche},
  series    = {University of L{\"u}neburg Working paper series in economics},
  number    = {12},
  type      = {researchpaper},
  year        = {2005},
}