Almost contact B-metric structures and the Bianchi classification of the   three-dimensional Lie algebras
  The object of investigation are the almost contact manifolds with B-metric in the lowest dimension three, constructed on Lie algebras. It is considered a relation between the classes in the Bianchi classification of three-dimensional real Lie algebras and the classes of a classification of the considered manifolds. There are studied some geometrical characteristics in some special classes. 
Hristo Manev
math.DG