TY - JOUR A1 - Zhu, X. A1 - Chen, D. A1 - Zhou, C. A1 - Li, M. A1 - Xiao, W. T1 - CARDINAL DIRECTION RELATIONS QUERY MODELING BASED ON GEO-ONTOLOGY JO - Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci. J1 - ISPRS-Archives VL - XXXIX-B2 SP - 179 EP - 184 Y1 - 2012/08/01 PB - ISPRS SN - 2194-9034 UR - https://isprs-archives.copernicus.org/articles/XXXIX-B2/179/2012/ L1 - https://isprs-archives.copernicus.org/articles/XXXIX-B2/179/2012/isprsarchives-XXXIX-B2-179-2012.pdf DO - 10.5194/isprsarchives-XXXIX-B2-179-2012 ER -