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3. M. K. Polivanov, ?A reduction formula, currents, and currentlike operators in axiomatic quantum field theory,? in: High Energy Physics and Theory of Elementary Particles [in Russian], Naukova Dumka, Kiev (1967), pp. 753?765.
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5. B. V. Medvedev, V. P. Pavlov, M. K. Polivanov, and A. D. Sukhanov, ?The S-particle method in quantum field theory,? Teor. Mat. Fiz.,13, No. 1, 3?40 (1972).