Xuesheng Zhao Jianjun Bai Jun Chen Zhilin Li A Seamless Visualizaton Model of the Global Terrain Based on the QTM. 1136-1145 2006 conf/icat/2006 ICAT http://dx.doi.org/10.1007/11941354_118 db/conf/icat/icat2006.html#ZhaoBCL06