1. On the solid angle subtended by a circular disc;Gardner;Nucl. Instrum. Methods,1971
2. Determination of the geometrical factor of cylindrical geometries;Gillespie;Rev. Sci. Instrum.,1970
3. The solid angle subtended by a solid, right, circular cylinder as seen from a point in space;Green;Nucl. Instrum. Methods,1974
4. Approximations for Digital Computers;Hastings,1955
5. Macklin, P.A., 1957. Expression for the solid angle subtended by a circular disc at a point source in terms of elliptic integrals (Included as a footnote in Masket, 1957).