1. Goncharov, A. B.: Integral geometry and three-dimensional recovering of randomly oriented particles from their electron microphotos,Crystallography (1986) (in Russian).
2. Wainstein, B. K. and Goncharov, A. B.: Finding spatial orientations of randomly oriented identical particles from their projections,Doklady USSR Acad. Sci. (1986) (in Russian).
3. Wainstein, B. K.: Three-dimensional electron microscopy of biology micromolecules,Russian Phys. Surveys,109 (1973), No. 3, 455?497 (Russian).
4. Gelfand, I. M., Graev, M. I., and Vilenkin, N. Ya.:Integral Geometry and Related Problems of Representation Theory, Fizmatgiz, Moscow, 1962 (Russian).
5. Modern Problems of Math.;I. M. Gelfand,1980