Kyungpook Mathematical Journal, cilt.49, sa.4, ss.789-799, 2009 (SCI-Expanded)
In this study we consider φ-conformally flat, φ-conharmonically flat, φ-projectively flat and φ-concircularly flat Lorentzian α-Sasakian manifolds. In all cases, we get the manifold will be an η-Einstein manifold.