@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}
}
@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}
}