V. E. Berezovskii, N. I. Guseva, J. Mikesh, “On Special First-Type Almost Geodesic Mappings of Affine Connection Spaces Preserving a Certain Tensor”,
Mathematical Notes
September 2015, Volume 98, Issue 3, pp 515-518

URL:

http://link.springer.com/article/10.1134/S0001434615090175?no-access=true