References

Allen, J.F. Maintaining knowledge about temporal intervals. Commun. ACM, 26(11), November 1983.

Bell, S.B.M., Diaz, B.M., Holroyd, F. and Jackson, M.J. Spatially referenced methods of processing raster and vector data. Image and Vision Computing, 1:211-220, 1983.

Department of Transport. Calculation of road traffic noise. HMSO, Welsh Office.

Diaz, B.M. and Bell, S.B.M. Spatial Data Processing using Tesseral Methods. NERC Unit for Thematic Information Systems, Swindon, UK., 1986.

Clementini, E, Sharma, J and Egenhofer, M.J. Modelling Topological Spatial Relations: Strategies for Query Processing Comput. & Graphics, 18(6), 1994.

Grunbaum, Branko and Shephard, G.C. Tilings and Patterns. Freeman, 1987.

Hayes, P.J. The naive physics manifesto. In D. Mitchie, editor, Expert Systems. Edinburgh University Press, 1979.

Kowalski, R. and Sergot, M. A logic-based calculus of events. New Generation Computing, 4, 1986.

Morton, G.M. A computer oriented geodetic data base, and a new technique in file structuring. IBM Canada Ltd., 1966.

B.Beattie, F.Coenen, T.J.M.Bench-Capon, B.M.Diaz and M.J.R.Shave.
Department of Computer Science, University of Liverpool,
P.O.Box 147, Liverpool L69 3BX U.K.
email: bbeattie@csc.liv.ac.uk
tel: 0151 794 3698 fax: 051 794 3715

A.Hough.
SGS Environment Ltd.
Yorkshire House, Chapel St. Liverpool, U.K.