Sabine Hennig, S., Vogler, R., Schötz, T., Strobl, J. and Imanalieva, P. 2023. Towards more User-Centered Contributory Citizen Science Initiatives: Learning from the u3Green Approach. International Journal of Geoinformatics. 19, 11 (Nov. 2023), 26–37. DOI:https://doi.org/10.52939/ijg.v19i11.2919.