Fraisl, D., Campbell, J., See, L., Wehn, U., Wardlaw, J., Gold, M., Moorthy, I., Arias, R., Piera, J., Oliver, J.L., Masó, J., Penker M., & Fritz, S. (2020). Mapping citizen science contributions to the UN sustainable development goals. Sustainability Science, 15, pp.1735–1751. https://doi.org/10.1007/s11625-020-00833-7