On the Second Approximate Matsumoto Metric
  In this paper, we study the second approximate Matsumoto metric on a manifold M. We prove that F is of scalar flag curvature and isotropic S-curvature if and only if it is isotropic Berwald metric with almost isotropic flag curvature. 
A. Tayebi, T. Tabatabaeifar and E. Peyghan
math.DG