The curvature tensor of almost cosymplectic and almost Kenmotsu   (\kappa,\mu,\nu)-spaces
  We study the Riemann curvature tensor of (\kappa,\mu,\nu)-spaces when they have almost cosymplectic and almost Kenmotsu structures, giving its writing explicitly. This leads to the definition and study of a natural generalisation of the contact metric (\kappa,\mu,\nu)-spaces. We present examples or obstruction results of these spaces in all possible cases. 
Alfonso Carriazo, Ver\'onica Mart\'in-Molina
math.DG