1. V. N. Morozov, in: Theory and Methods of Calculating Nuclear Reactors [in Russian], Gosatomizdat, Moscow (1962), p. 91.
2. A. I. Leipunskii et al., Paper S. M. 18/80, Seminar on the Physics of Fast and Intermediate Reactors, Vienna (1961).
3. G. I. Marchuk et al., Critical Parameters of Homogeneous Multiplying Systems [in Russian], Atomizdat, Moscow (1965), p. 30.
4. G. I. Marchuk, Numerical Methods of Calculating Nuclear Reactors [in Russian], Atomizdat, Moscow (1958), p. 458.
5. D. F. Zaretskii and D. D. Odintsov, in: Reactor Construction and Reactor Theory [in Russian], Izd. Akad. Nauk SSSR, Moscow (1955), p. 279.