@article{BontrupMarquardt2018,
  author    = {Heinz-Josef Bontrup and Ralf-Michael Marquardt},
  title     = {Zur Problematik der Arbeitsmarktstatistik},
  journal   = {Sozialer Fortschritt. Unabh{\"a}ngige Zeitschrift f{\"u}r Sozialpolitik},
  volume    = {51},
  number    = {12},
  pages     = {315f.},
  year      = {2018},
}