@book{Knüppel+2022, url = {https://doi.org/10.3790/9783428586653}, title = {Datenfinanzierte Apps als Gegenstand des Datenschutzrechts}, title = {}, author = {Kai-Niklas Knüppel}, publisher = {Duncker & Humblot}, address = {}, doi = {doi:10.3790/9783428586653}, isbn = {9783428586653}, year = {2022}, lastchecked = {2022} }