1. E. R. Cohen, Proc. U. N. Int. Conf. Peaceful Uses At. Energy, 2nd, Geneva, 1958 p. 629. United Nations, New York, 1958.
2. H. Soodak, Nucl. Reactor Theory Proc. Symp. Appl. Math., 11th, New York, 1959 (G. Birkhoff and E. P. Wigner, eds.). Am. Math. Soc., Providence, Rhode Island, 1961.
3. “Numerical Solutions of Nonlinear Differential Equations”;Birkhoff,1966
4. Use of the Prompt-Jump Approximation in Fast-Reactor Kinetics