@articleArias-Cabarcos_Khalili_Strufe_2023, title=’Surprised, Shocked, Worried’: User Reactions to Facebook Data Collection from Third Parties, volume=2023, DOI=10.56553/popets-2023-0023, number=1, journal=Proceedings on Privacy Enhancing Technologies, publisher=Privacy Enhancing Technologies Symposium Advisory Board, author=Arias-Cabarcos, Patricia and Khalili, Saina and Strufe, Thorsten, year=2023, pages=384–399 

@articleJager_Rupp_2016, title=Black-Box Accumulation: Collecting Incentives in a Privacy-Preserving Way, volume=2016, DOI=10.1515/popets-2016-0016, number=3, journal=Proceedings on Privacy Enhancing Technologies, publisher=Walter de Gruyter GmbH, author=Jager, Tibor and Rupp, Andy, year=2016, pages=62–82