@article{Fraisl:102208,
      author        = "Fraisl, D and Campbell, J and See, L and Wehn, U and
                       Wardlaw, J and Gold, M and Moorthy, I and Arias, R and
                       Piera, J and Oliver, JL and Maso, J and Penker, M and
                       Fritz, S",
      title         = "{Mapping citizen science contributions to the UN
                       sustainable development goals}",
      year          = "2020",
}