A new class of metric f-manifolds
  We introduce a new general class of metric f-manifolds which we call (nearly) trans-S-manifolds and includes S- manifolds, C-manifolds, s-th Sasakian manifolds and generalized Kenmotsu manifold studied previously. We prove their main properties and we present many examples which justify their study. 
Pablo Alegre, Luis M. Fern\'Andez, and Alicia Prieto-Mart\'In
math.DG