@article{WagnerHummel1996,
  author    = {Wagner, Dieter and Hummel, Thomas R.},
  title     = {Perspektiven des differentiellen Personalmarketing},
  year      = {1996},
  language  = {de}
}
@article{WagnerHummel1996,
  author    = {Wagner, Dieter and Hummel, Thomas R.},
  title     = {Differentielles Personalmarketing : unternehmensinterne und unternehmensexterne Dimensionen},
  year      = {1996},
  language  = {de}
}