on characterizations of contact cr submanifolds of maximal contact cr dimension of sasakian space form

In this paper, we investigate contact cr submanifolds of contact cr dimension in sasakian space form and introduce the general structure of these submanifolds and then studying structures of this submanifols with the condition h(f x; y ) + h(x; f y ) = g(f x; y )ζ; for the normal vector field ζ, which is nonzero, and we classify these submanifolds.