Spherical wave-type solution in relativistic theory of gravitation

In relativistic theory of gravitation the nonstatic spherically-symmetrical solutions and in particular such wave solutions have a physical sense as far as the temporal coordinate of the Minkowski space-time has it. Although the receiving wave solution has enough formal character, it illustrates the possibility of existence of spherical gravitational waves. The realistic model must include also interior solution and matching it with the finding exterior one