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2. R. Murray, C. Bingham, and C. Martin, Nucl. Sci. and Engl., 18, 481 (1964).
3. U. Karplus, Simulation Devices for Solving Problems of Field Theory [Russian translation], IL, Moscow (1962).
4. G. E. Pukhov and K. D. Zhuk, synthesis of Multiply Connected Control Systems by the Method of Inverse Operators [in Russian], Naukova Dumka, Kiev (1966).
5. M. A. Schultz, Regulation of Power Generating Nuclear Reactors [Russian translation], IL, Moscow (1957).