1. Fizicheskii entsiklopedicheskii slovar’ (Physical Encyclopedia), Prokhorov, A.M., Ed., Moscow: Sovetskaya Entsiklopediya, 1984.
2. Gorbachev, V.M., Zamyatnin, Yu.S., and Lbov, A.A., Vzaimodeistvie izluchenii s yadrami tyazhelykh elementov i deleniya yader. Spravochnik (Interaction of Radiation with Nuclei of Heavy Elements and Nuclear Fissions), Moscow: Atomizdat, 1976, p. 382.
3. Protopopov, A.N., Asimmetriya deleniya. Fizika deleniya atomnykh yader. Sb. statei (Coll. of Papers “Fission Asymmetry. Physics of Atomic Nucleus Fission”), Perfilov, N.A. and Eismont, V.P., Eds., Moscow: Atomizdat, 1962, p. 29.
4. Mukhin, K.N., Vvedenie v yadernuyu fiziku (Introduction in Nuclear Physics), Moscow: Atomizdat, 1965, p. 391.
5. Hemmendinger, A., Trans. 2nd Int. Conf. on the Peaceful Uses of Atomic Energy (Geneva, 1958), vol. 2, Neutron Physics, Moscow: Atomizdat, 1959, p. 89.