1. A. A. Logunov and M. A. Mestvirishvili,The Relativistic Theory of Gravitation [in Russian], Nauka, Moscow (1989).
2. Proc. 12th Seminar;A. V. Genk,1990
3. V. A. Fock,The Theory of Space, Time and Gravitation, Oxford (1964).
4. A. V. Genk,Teor. Mat. Fiz.,79, 473 (1989);87, 130 (1991).
5. S. N. Sokolov, Preprint IFVE, OTF, Preprint No. 89-117 [in Russian], Institute of High Energy Physics, Serpukhov (1989).