The Schouten-van Kampen affine connection adapted to an almost (para)   contact metric structure
  We study the Schouten-van Kampen connection associated to an almost contact or paracontact metric structure. With the help of such a connection, some classes of almost (para) contact metric manifolds are characterized. Certain curvature properties of this connection are found. 
Zbigniew Olszak
math.DG