@Book{Metzler.2004,
  author = {Metzler, Leonhard and Pohle, Klaus},
  title  = {Risikoaggregation im industriellen Controlling},

  year   = {2004},
  number = {},
  url    = {http://www.gbv.de/dms/zbw/475066618.pdf},

  const  = {\ text}
}