“…Generalized Sasakian space forms were studied extensively in [1,2,3,15,18,19,25]. An almost contact metric manifold (M, φ , ξ , η, g) is a generalized (k, µ) space form if there exists differential functions f 1 , f 2 , · · · , f 6 on M 2n+1 ( f 1 , · · · , f 6 ), whose curvature tensor R is given by [8,9]…”