Ali Khalaf Ali, A. A.Shihab. Class Nearly kahler Manifold of W – Projective Curvature Tensor. Tikrit J. Pure Sci. [Internet]. 2023 Apr. 27 [cited 2024 May 14];28(2):118-20. Available from: https://tjps.tu.edu.iq/index.php/tjps/article/view/1345