@article{Beck2014,
  author    = {Beck, Ralf},
  title     = {Aktie versus Crowdinvesting},
  series = {CFO aktuell : Zeitschrift f{\"u}r Finance \& Controlling},
  volume    = {8 (2014)},
  number    = {4},
  issn      = {1993-2960},
  pages     = {4},
  year      = {2014},
  language  = {de}
}
@book{Beck2015,
  author    = {Beck, Ralf},
  title     = {Wer braucht noch Banken?},
  publisher = {B{\"o}rsenbuchverlag},
  address   = {Kulmbach},
  isbn      = {978-3864702907},
  pages     = {301},
  year      = {2015},
  language  = {de}
}
@book{Beck2012,
  author    = {Beck, Ralf},
  title     = {Crowdinvesting},
  publisher = {Beck},
  address   = {D{\"u}sseldorf},
  isbn      = {978-1-48182018-9},
  pages     = {149},
  year      = {2012},
  language  = {de}
}
@book{Beck2014,
  author    = {Beck, Ralf},
  title     = {Crowdinvesting},
  publisher = {B{\"o}rsenmedien},
  address   = {Kulmbach},
  isbn      = {978-3-86470-205-1},
  pages     = {255},
  year      = {2014},
  language  = {de}
}