1. Self-Shielding of Lumped-Poison Mixtures
2. K. M. CASE, F. DE HOFFMAN, AND G. PLACZEK, “In troduction to the Theory of Neutron Diffusion,” Vol. I. Los Alamos Scientific Laboratory, 1953.
3. E. U. CONDON, AND H. ODISHAW, “Handbook of Physics,” Chap. 12. McGraw-Hill, New York, 1958.
4. D. HILBERT AND S. COHN-VOSSEN, “Geometry and Imagination,” p. 47. Chelsea Publ., New York, 1952.