A method for LOD generation of 3D city model based on extended 3D R-tree index. - Jun Gong; Hanwu Zhang (FSKD, 2011)

Monitoring and evaluating the quality of Web Map Service resources for optimizing map composition over the internet to support decision making. - Huayi Wu; Zhenglong Li 002; Hanwu Zhang; Chaowei Yang; Shengyu Shen (Comput. Geosci., 2011)