@inproceedings{UlrichKratt2021,
  author    = {Patrick Ulrich and Mona Kratt},
  title     = {Combined Assurance vs. Three Lines of Defense – an Empirical Comparison},
  series = {Controlling. Accounting\&Audit. Risk\&Compliance. Finanzen.},
  editor    = {Stefan Behringer},
  publisher = {Verlag IFZ},
  address   = {Luzern},
  isbn      = {978-3-906877-90-7},
  pages     = {209 -- 215},
  year      = {2021},
  language  = {en}
}