Geodesic Lines in the Gravitational Field of Nonlinear Cosmic Strings
  We briefly review the equations of motion and the space-time interval due to the nonlinear cosmic string that have been derived in ref. [3] for the first time. The different types of isotropic and nonisotropic geodesic lines in the gravitational field of nonlinear cosmic string have been analyzed in detail. 
L. M. Chechin and T. B. Omarov