Jihong Guan Shuigeng Zhou Junpeng Chen Xiaolong Chen Yang An Fuling Bian Zhiyong Peng MAG2DL: A Framework for Information Retrieval and Integration of Distributed Geographic Digital Libraries. 351-364 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2911&spage=351 2003 conf/icadl/2003 ICADL db/conf/icadl/icadl2003.html#GuanZCCABP03