Indefinite Almost Paracontact Metric Manifolds. - Mukut Mani Tripathi; Erol Kiliç; Selcen Yüksel Perktas; Sadik Keles (Int. J. Math. Math. Sci., 2010)

Some Curvature Conditions on a Para-Sasakian Manifold with Canonical Paracontact Connection. - Bilal Eftal; Erol Kiliç; Selcen Yüksel Perktas (Int. J. Math. Math. Sci., 2012)

Lightlike Hypersurfaces of a Semi-Riemannian Product Manifold and Quarter-Symmetric Nonmetric Connections. - Erol Kiliç; Oguzhan Bahadir (Int. J. Math. Math. Sci., 2012)