olde Scholtenhuis, L., Zlatanova, S., den Duijn, X., Ntarladima, A.-M. and Theocharous, E. 2017. Spying the underground: visualizing subsurface utilities’ location uncertainties with fuzzy 3D. SPOOL. 4, 2 (Dec. 2017), 61–64. DOI:https://doi.org/10.7480/spool.2017.2.1930.