1. V. A. Fok,Theory of Space, Time and Gravity [in Russian], GITTL, Moscow (1955), pp. 186, 188, 239.
2. P. A. M. Dirac,General Relativity (Russian translation], Atomizdat, Moscow, (1978), p. 23.
3. L. Page, “A new relativity: I. Fundamental principles and transformations between accelerated systems,”Phys. Rev.,49, 254 (1936).
4. L. D. Landau and E. M. Lifshits,The Field Theory [in Russian], Nauka, Moscow (1967), p. 107.
5. C. Huygens,Treatise in Optics [Russian translation], ONTI, Moscow (1935).