TY - JOUR A1 - Agrafiotis, P. A1 - Lampropoulos, K. A1 - Georgopoulos, A. A1 - Moropoulou, A. T1 - 3D MODELLING THE INVISIBLE USING GROUND PENETRATING RADAR JO - Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci. J1 - ISPRS-Archives VL - XLII-2/W3 SP - 33 EP - 37 Y1 - 2017/02/23 PB - Copernicus Publications SN - 2194-9034 UR - https://isprs-archives.copernicus.org/articles/XLII-2-W3/33/2017/ L1 - https://isprs-archives.copernicus.org/articles/XLII-2-W3/33/2017/isprs-archives-XLII-2-W3-33-2017.pdf DO - 10.5194/isprs-archives-XLII-2-W3-33-2017 ER -