TY - JOUR A1 - Rönneberg, M. A1 - Kettunen, P. T1 - Enabling citizens to refine the location accuracy of cadastre boundary markers by gamified VGI JO - Abstr. Int. Cartogr. Assoc. J1 - ICA-Abs VL - 3 SP - 252 EP - Y1 - 2021/12/13 PB - Copernicus Publications SN - 2570-2106 UR - https://ica-abs.copernicus.org/articles/3/252/2021/ L1 - https://ica-abs.copernicus.org/articles/3/252/2021/ica-abs-3-252-2021.pdf DO - 10.5194/ica-abs-3-252-2021 ER -