Bianchi-I cosmological model and crossing singularities
  We consider a rather simple method for the description of the Big Bang - Big
Crunch cosmological singularity crossing. For the flat Friedmann universe this
method gives the same results as more complicated methods, using Weyl symmetry
or the transitions between the Jordan and Einstein frames. It is then easily
generalized for the case of a Bianchi-I anisotropic universe. We also present
early-time and late-time asymptotic solutions for a Bianchi-I universe, filled
with a conformally coupled massless scalar field.
