- AZIZI, A., CLARK, M. J. and DAVENPORT, J., 1991. Air photo or video inputs to vector or raster GIS AGI 91 Conference Papers. 1.20.1- 1.20.5.
- BONIFACEP, R.J., 1992. PRI'SM- Softcopy production of orthophotos and DEM. Photogrammetric Engineering and Remote Sensing. 58(1): 91-94.
- CLARK. M.J., GURNELL. A. M. CANDISH. C. AND MILIS, D., 1990. Flood defence assessment through GIS. AGI 90 Conferenice Papers. 5-1-1-5.1.3.
- DOWMAN. I.J., EBNER. H. and HEIPKE. C., 1992.
- Overview of European developments in digital photogrammetric workstations. Photogrammetric Engineering and Remote Sensing. (58(1): 51-56.
- GRUEN. A.W., 1989. Digital Photogrammetric Processing Systems: current status and prosoects. Jbid., 55(5): 581-585.
- HOOKE.J. and RILEY.R., 1987. Historical changes on the Hampshire coast 1870-1965. Department of geography. Portsmouth Polytechnic. 59 Pages. (Unpublished).
- LEBERL. F., EBNER. H. and DOWMAN.I.(Eds)., 1992.
- Desing issue of Photogrammetric Engineering and Remote Sensing. 58(I): 49-115.
PETRIE. G., 1983 The philosophy of digital and analytical photogrammetric systems. Proceedings of 39th Photogrammetric Week. University of Stuttgart. 244 Pages: 53-68.