1. R. Ya. Kucherov and V. P. Minenko, At. Énerg.,19, 360 (1965).
2. I. A. Verennov et al., in: Isotope Production [in Russian], Atomizdat, Moscow (1973), p. 469.
3. G. L. Partsakhashvili, Communications of the Academy of Sciences of the Georgian SSR,63, 53 (1971).
4. D. Himmelblau, Process Analysis by Statistical Methods [Russian translation], Mir, Moscow (1973).
5. C. Speedy, R. Brown, and G. Goodwin, Control Theory [Russian translation], Mir, Moscow (1973).