TY - JOUR A1 - Pispidikis, I. A1 - Dimopoulou, E. T1 - DEVELOPMENT OF A 3D WEBGIS SYSTEM FOR RETRIEVING AND VISUALIZING CITYGML DATA BASED ON THEIR GEOMETRIC AND SEMANTIC CHARACTERISTICS BY USING FREE AND OPEN SOURCE TECHNOLOGY JO - ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci. J1 - ISPRS-Annals VL - IV-2/W1 SP - 47 EP - 53 Y1 - 2016/10/05 PB - Copernicus Publications SN - 2194-9050 UR - https://isprs-annals.copernicus.org/articles/IV-2-W1/47/2016/ L1 - https://isprs-annals.copernicus.org/articles/IV-2-W1/47/2016/isprs-annals-IV-2-W1-47-2016.pdf DO - 10.5194/isprs-annals-IV-2-W1-47-2016 ER -