On a class of $\alpha$-para Kenmotsu manifolds
  The purpose of this paper is to classify $\alpha$-para Kenmotsu manifolds $M^3$ such that the projection of the image of concircular curvature tensor $L$ in one-dimensional linear subspace of $T_{p}(M^{3})$ generated by $\xi_{p}$ is zero. 
K. Srivastava and S. K. Srivastava
math.DG