1. Ackermann, F. & Krzystek, P. (1991), ‘MATCH-T: Automatic Mensuration of Digital Elevation Models’, Presented paper to the 3rd Technical Seminar of the Sociedad Espanola de Cartografia Fotogrametria y Teledeteccion.
2. Burns, J., Hansen, A. & Riseman, E. (1986), ‘Extracting straight lines’, IEEE Transactions on Pattern Analysis and Machine Intelligence.
3. Förstner, W. & Pallaske, R. (1993), ‘Mustererkennung und 3D-Geoinformations-systeme’, Zeitschrift für Photogrametrie und Fernerkundung pp. 167–177.
4. Fritsch, D., Sester, M. & Schenk, T. (1994), Test on image understanding, in ‘Proc. ISPRS Congress Comm. III’, München, pp. 243–248.
5. Haala, N. (1994), Detection of buildings by fusion of range and image data, in ‘Proc. ISPRS Congress Comm. III’, München, pp. 341–346.