Semi-Automatic Acquisition of Symbolically-Annotated 3D-Models of Office Environments. - Michael Beetz; Markus Giesenschlag; Roman Englert; Eberhard Gülch; Armin B. Cremers (ICRA, 1999)

Image Analysis in Semi-automatic Building Extraction. - Eberhard Gülch (Künstliche Intell., 2001)