1. R. Evans, Architectural projection, in: E. Blau, E. Kaufman (Eds.), Architecture and Its Image, Canadian Centre for Architecture, Montreal, 1989.
2. E. Gombrich, Pictorial instructions, in: H. Barlow, C. Blakemore, M. Weston-Smith (Eds.), Images and Understanding, Cambridge Univ. Press, Cambridge, 1990.
3. D. Lopes, Understanding Pictures, Clarendon, Oxford, 1996.
4. M.D. Gross, Indexing visual databases of designs with diagrams, in: A. Koutamanis, H. Timmermans, I. Vermeulen (Eds.), Visual Databases in Architecture, Recent Advances in Design and Decision Making, Avebury, Aldershot, 1995.
5. A. Koutamanis, Recognition and retrieval in visual architectural databases, in: A. Koutamanis, H. Timmermans, I. Vermeulen (Eds.), Visual Databases in Architecture, Recent Advances in Design and Decision Making, Avebury, Aldershot, 1995.