Hellberger, NathaliNathaliHellbergerPierson, JosJosPiersonPoell, ThomasThomasPoell2021-10-252021-10-2520180197-2243https://imec-publications.be/handle/20.500.12860/30864Governing online platforms: from contested to cooperative responsibilityJournal articlehttps://www.tandfonline.com/doi/full/10.1080/01972243.2017.1391913