  In the framework of the special theory of relativity, the relativistic theory
of gravitation (RTG) is constructed. The energy-momentum tensor density of all
the matter fields (including gravitational one) is treated as a source of the
gravitational field. The energy-momentum and the angular momentum conservation
laws are fulfilled in this theory. Such an approach permits us to unambiguously
construct the gravitional field theory as a gauge theory. According to the RTG,
the homogeneous and isotropic Universe is to be ``flat''. It evolves cyclewise
from some maximal density to the minimal one, etc.
  The book is designed for scientific workers, post-graduates and upper-year
students majoring in theoretical physics.
