%0 Journal Article %T Monitoring vegetation phenology using improved MODIS products %A Shuai, Yanmin %A Schaaf, Crystal B. %A Li, Xiaowen %A Gao, Feng %A Liu, Jicheng %A Wolfe, Robert E. %A Wang, Jindi %A Zhang, Xiaoyang %A Zhu, Qijiang %J Proceedings of SPIE %V 6833 %N 1 %P 68332X-68332X-9 %@ 0277-786X %D 2007-11-29 %I SPIE %~ DeepDyve