Relationship of gauge gravitation theory in Riemann-Cartan spacetime and   general relativity theory
  The simplest variant of gauge gravitation theory in Riemann-Cartan spacetime leading to the solution of the problem of cosmological singularity and dark energy problem is investigated. It is shown that this theory by certain restrictions on indefinite parameters of gravitational Lagrangian in the case of usual gravitating systems leads to Einstein gravitational equations with effective cosmological constant. 
A.V. Minkevich
gr-qc