1. Budinger, T. F. - Gullberg, G. T. - Huesman, R. H.: Emission Computed Tomography, in: G. T. Herman (ed.): Image Reconstruction from Projections. Topics in Applied Physics, vol. 32, Springer 1979
2. Tretiak, O. - Metz, C.: The Exponential Radon Transform, Manuscript, Drexel University
3. Censor, Y. - Gustafson, D. E. - Lent, A. - Tuy, H.: A New Approach to the Emission Computerized Tomography Problem: Simultaneous Calculation of Attenuation and Activity Coefficients, IEEE NS, Special Issue, April 1979
4. Natterer, F.: The Ill-Posedness of Radon’s Integral Equation, Symposion on Ill-Posed Problems: Theory and Practice,Delaware, USA, October 2–6, 1979
5. Hamaker, C. - Smith, K. T. - Solmon, D. C. - Wagner, S. L.: The Divergent Beam X-Ray Transform, to appear