1. K. P. Stanyukovich and V. N. Mel'nikov, Hydrodynamics, Fields, and Constants in Gravitation Theory [in Russian], énergoatomizdat, Moscow (1983).
2. V. N. Mel'nikov, Progress in Science and Technology: Classical Field Theory and Gravitation Theory, Vol. 1: Gravitation and Cosmology [in Russian], VINITI, Moscow (1991), p. 49.
3. V. de Sabbata, V. N. Melnikov, and P. I. Pronin, Prog. Theor. Phys.,88, No. 4, 623 (1992).
4. P. N. Antonyuk, K. A. Bronnikov, and V. N. Mel'nikov, Izmer. Tekh., No. 8, 3 (1993).
5. D. R. Long, Nature,260, 417 (1976).