db/conf/gis/AimeBM99.html Andrea Aime Flavio Bonfatti Paola Daniela Monari Making GIS Closer to End Users of Urban Environment Data. 122-127 GIS1999/P122.pdf 1999 conf/gis/99 ACM-GIS http://doi.acm.org/10.1145/320134.320165 db/conf/gis/gis99.html#AimeBM99