1. C. A. Mansius, Irradiation Processing Department, General Electric Company, personal communication, 1960.
2. The Physical Theory of Neutron Chain Reactors;Weinberg,1958
3. The Elements of Nuclear Reactor Theory;Glasstone,1952
4. Principles of Nuclear Reactor Engineering;Glasstone,1955
5. Absorption Cross Section of Graphite;Nichols;Nuclear Sci. and Eng.,1960