Robert Pasley, Paul Clough, Ross S. Purves, Florian A. Twaroch. Mapping geographic coverage of the web. In Walid G. Aref, Mohamed F. Mokbel, Markus Schneider, editors, 16th ACM SIGSPATIAL International Symposium on Advances in Geographic Information Systems, ACM-GIS 2008, November 5-7, 2008, Irvine, California, USA, Proceedings. pages 19, ACM, 2008. [doi]
Abstract is missing.