Gravitational Field Equation and the Structure of Black Holes
  The problem posed by Einstein in 1913 related to the inclusion of the energy-momentum tensor of the gravitational field in the equation of the same gravitational field has been solved. At the same time, it was possible to preserve the covariance of the equation. In small fields, the new gravitational field equation successfully transforms into the Einstein equation. The new equation implies a local conservation law. The numerical solution of the equation is given. The numerical solution for g_{00} is given. This parameter is strictly positive. Within the region of large fields the value quickly drops to almost zero. The region where extremely small values of g_{00} can be found corresponds to the interval 0 < r < 3.4 r_g. This interval is close to the observed radius of neutron stars. It follows that neutron stars and "black holes" are of the same nature. There are no singularities in the solutions of the equation. 
V.B. Morozov
physics.gen-ph