Peter K. Allen Ioannis Stamos Atanas Gueorguiev Ethan Gold Paul Blaer AVENUE: Automated Site Modeling in Urban Environments. 357-364 2001 conf/3dim/2001 3DIM http://doi.ieeecomputersociety.org/10.1109/IM.2001.924477 db/conf/3dim/3dim2001.html#AllenSGGB01