TY - JOUR A1 - Li, Z. A1 - Li, Y. T1 - PHOTOGRAMMETRIC RECORDING OF ANCIENT BUILDINGS BY USING UNMANNED HELICOPTERS – CASES IN CHINA JO - Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci. J1 - ISPRS-Archives VL - XXXVIII-1/C22 SP - 189 EP - 193 Y1 - 2012/09/06 PB - ISPRS SN - 2194-9034 UR - https://isprs-archives.copernicus.org/articles/XXXVIII-1-C22/189/2011/ L1 - https://isprs-archives.copernicus.org/articles/XXXVIII-1-C22/189/2011/isprsarchives-XXXVIII-1-C22-189-2011.pdf DO - 10.5194/isprsarchives-XXXVIII-1-C22-189-2011 ER -