@article{Hennig:2020to, author = "Hennig, Sabine and Abad, Lorena and Hölbling, Daniel", title = "{Technological solutions for contributory citizen science: experiences from citizenMorph}", doi = "10.22323/1.366.0005", journal = "PoS", year = 2020, volume = "ACSC2019", pages = "005" }