Gilberto Pedrosa João Luzio Hugo Manguinhas Bruno Martins José Luis Borbinha DIGMAP: A Digital Library Reusing Metadata of Old Maps and Enriching It with Geographic Information. 434-435 2008 ECDL http://dx.doi.org/10.1007/978-3-540-87599-4_56 conf/ercimdl/2008 db/conf/ercimdl/ecdl2008.html#PedrosaLMMB08