@article{Siebert:2021VW, author = "Siebert, Janette and Eder, Natalie and Kmetova-Biro, Elena and Zink, Richard", title = "{Professional monitoring - A basis for citizen science projects with sustainable impact?}", doi = "10.22323/1.393.0008", journal = "PoS", year = 2021, volume = "ACSC2020", pages = "008" }