Claudia Braun Thomas H. Kolbe Felicitas Lang Wolfgang Schickler Volker Steinhage Armin B. Cremers Wolfgang Förstner Lutz Plümer Models for photogrammetric building reconstruction. 109-118 1995 19 Computers & Graphics 1 http://dx.doi.org/10.1016/0097-8493(94)00126-J db/journals/cg/cg19.html#BraunKLSSCFP95