1. Forrest, A.R., 1968. A survey of techniques for removing hidden lines. Cambridge Mathematical Laboratory, Cambridge University, CAD Group Document No. 19, 10 pp
2. Topography and bathymetry of the Dead Sea depression;Hall;Tectonophysics,1996
3. Jones, C.B., 1969. A new approach to the “hidden line” problem. Report CG69/5, Centre for Computing and Automation, Imperial College, London, 19 pp
4. Theory and problems of computer graphics;Plastock,1986
5. Hidden-line removal from three-dimensional maps and diagrams;Sprunt,1975