Bürgler, C. & Spies, K., 2021, UStG-ON - Kommentar zum Umsatzsteuergesetz. Wolfgang Berger, Christian Bürgler, Sabine Kanduth-Kristen, Marian Raimund Wakounig (ed.). Wien: Manz
Publication: Chapter in book/Conference proceeding › Contribution to legal commentary
James, K. & Spies, K., 2021, Virtues and Fallacies of VAT: An Evaluation after 50 Years. Robert F. van Brederode (ed.). Alphen aan den Rijn: Kluwer Law International, p. 217 - 257
Publication: Chapter in book/Conference proceeding › Chapter in edited volume