TY - JOUR A1 - Agugiaro, G. T1 - FIRST STEPS TOWARDS AN INTEGRATED CITYGML-BASED 3D MODEL OF VIENNA JO - ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci. J1 - ISPRS-Annals VL - III-4 SP - 139 EP - 146 Y1 - 2016/06/03 PB - Copernicus Publications SN - 2194-9050 UR - https://isprs-annals.copernicus.org/articles/III-4/139/2016/ L1 - https://isprs-annals.copernicus.org/articles/III-4/139/2016/isprs-annals-III-4-139-2016.pdf DO - 10.5194/isprs-annals-III-4-139-2016 ER -