@article{WalaBaumuellerKnoll,
  author    = {Wala, Thomas and Baum{\"u}ller, Josef and Knoll, Leonhard},
  title     = {Die neue Investitionszuwachspr{\"a}mie. {\"U}berblick und kritische W{\"u}rdigung},
  series = {SWK},
  journal   = {SWK},
  number    = {9},
  subject      = {Investment Accounting},
  language  = {de}
}
@incollection{WalaLeutgeb,
  author    = {Wala, Thomas and Leutgeb, Daniel},
  title     = {Investitionscontrolling},
  series = {Bindestrich-Controlling},
  booktitle = {Bindestrich-Controlling},
  publisher = {Linde},
  publisher      = {Fachhochschule Technikum Wien},
  subject      = {Investment Accounting},
  language  = {de}
}