@incollection{genchev2026oidapprovals,
  author = {Genchev, Stefan and Schwanke, Nina and Carle, Georg},
  title = {Confidential, Web-based PDF Signing Approvals for Remote Signing Solutions},
  year = {2026},
  doi = {10.18420/OID2026_02},
  booktitle = {Open Identity Summit 2026},
  publisher = {Gesellschaft für Informatik e.V.},
  address = {Bonn},
  pissn = {2944-7682},
  pages = {19--33}
}