Task multi-level decompose in grid-VGE. - Xian Wu 006; De-peng Zhao; Jianhua Gong; Jun Zhu 007; Jianqin Zhang; Bingli Xu (IGARSS, 2005)

An Quadtree Coding in E-chart. - Zhong-jie Zhang; Xian Wu; De-peng Zhao; De-Qiang Wang (ICICA (1), 2010)