- 202 - 27. R. D. Evans, The Atomic Nucleus, McGraw-Hill Book Company, New York (1955). 28. E. Segr', Nuclei and Particles, W. A. Benjamin, New York (1964). 29. L. Dresner, Resonance Absorption in Nuclear Reactors, Pergamon Press (1960). 30. R. E. Hyland et al., "Two Dimensional Criticality Calculations of Gaseous-Core Cylindrical Cavity Reactors," NASA TN D-1575 (1963). 31. L. 0. Herwig and T. S. Latham, "Nuclear Characteristics of Large Reflector Moderated Gaseous-Fuel Cavity Reactors Containing Hot Hydrogen," AIAA Journal, 5, 930-937 (1967). 32. G. D. Joanou and J. S. Dudek, "GAM-1, A Consistent P1 Multigroup Code for the Calculation of Fast Neutron Spectra and Multigroup Constants," GA-1850 (1961). 33. E. H. Canfield et al., SOPHIST-I, An IBM 709/7090 Code Which Calculates Multigroup Transfer Coefficients for Gaseous Moderators," UCRL-5956 (1961). 34. R. H. Schudde and J. Dyer, "TEMPEST, A Neutron Thermalization Code," North American Aviation Program Description (1960). 35. D. C. Baller and H. P. Platt, "The AIM-6 Code, A Multigroup, One Dimensional Diffusion Equation Code," North American Aviation Program Description (1961). 36. A. B. Cambel, D. P. Duclos, and T. P. Anderson, Real Gases, Academic Press, New York (1963). 37. K. S. Kunz, Numerical Analysis, McGraw-Hill Book Company, New York (1957). 38. W. E. Milne, Numerical Calculus, Princeton University Press, Princeton, New Jersey (1949). 39. R. H. Fowler and E. A. Guggenheim, Statistical Thermodynamics, Cambridge University Press, London (1960). 40. E. U. Condon and G. H. Shortley, The Theory of Atomic Spectra, Cambridge University Press, London (1964).