@article{Krupp2009,
  author    = {Alfred D. Krupp},
  title     = {Internationales Beteiligungscontrolling mit dem Beteiligungs-Risiko-Portfolio},
  series   = {Controlling \& Management},
  volume    = {53},
  number    = {1},
  publisher = {Gabler Verlag},
  address   = {Wiesbaden},
  issn      = {1614-1822},
  doi       = {10.1007/s12176-009-0013-3},
  pages     = {43 -- 48},
  year      = {2009},
  language  = {de}
}