1. Cho, Z.H., 1975. Study of contrast and modulation mechanism in X-Ray photon transverse axial transmission tomography Phys. Med. Biol., 20, 879.
2. Frain, C., Surmont, J., Tubiana, M., Pierquin, B., Dutreix, A., 1955. Intérêt de la tomographic transversale dans le repérage, le centrage et la dosimétrie des tumeurs — J. Radiol. Electrol. 36, 792.
3. Geise, R.A., McCullough, E.C., 1977. The use of CT Scanners in Me-gavoltage Photon Beam Therapy Planning — Radiology 124, 133.
4. Goitein, M., Wittenberg, J., Doucette, J., Friedberg, C., Mendiondo, M., Gunderson, L., Lingood, R., Shipley, W.U., Fineberg, M.V., 1978. The value of CT in radiotherapy treatment planning — J. Comput. Assist. Tomogr. 2, 524.
5. Herring, D.F., Compton, D.M.J., 1971. The degree of precision required in the radiation dose delivered in cancer radiotherapy Brit. J. Radiology 55, 51.