@article{PietschmannHuppertzRuhtz1999,
  author    = {Pietschmann, Bernd P. and Huppertz, Silke and Ruhtz, Vanessa},
  title     = {Was macht F{\"u}hrungsgrunds{\"a}tze erfolgreich?},
  series = {Personal : Zeitschrift f{\"u}r Human Resource Management. 51 (1999), H. 10},
  journal   = {Personal : Zeitschrift f{\"u}r Human Resource Management. 51 (1999), H. 10},
  isbn      = {0031-5605},
  pages     = {506 -- 510},
  year      = {1999},
  language  = {de}
}
@article{PietschmannRuhtz2001,
  author    = {Pietschmann, Bernd P. and Ruhtz, Vanessa},
  title     = {Knowledge Management},
  series = {Personal : Zeitschrift f{\"u}r Human Resource Management. 53 (2001), H. 5},
  journal   = {Personal : Zeitschrift f{\"u}r Human Resource Management. 53 (2001), H. 5},
  isbn      = {0031-5605},
  pages     = {242 -- 249},
  year      = {2001},
  language  = {en}
}