TY - PROGRESS IN GEOGRAPHY A1 - LI Shuang,, YAO Jing T1 - A Characteristics and Assessment Analysis of DEM Products Y1 - 2005-11-25 00:00:00.0 JF - PROGRESS IN GEOGRAPHY JO - PROGRESS IN GEOGRAPHY SP - 99 EP - 108 VL - 24 IS - 6 UR - {https://www.progressingeography.com/EN/10.11820/dlkxjz.2005.06.012} N1 - 10.11820/dlkxjz.2005.06.012 ER -