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• [1] Beem, J.K., Ehrlich, P.E., Global Lorentzian Geometry, Marcel Dekker, New York, 1981.
• [2] Chen, Y.J., Ravani, B., Oset Surface Generation and Contouring in Computer Aided Design, ASME Journal of Mechanisms, Transmissions and Automation in Design, 1987.
• [3] Farouki, R.T., The Approximation of Non-Degenerate oset Surfaces, Computer Aided Geometric Design, 3(1) (1986) 15-43.
• [4] Kasap E., Kuruoglu, N., The Bertrand Osets of Ruled Surfaces in R3 1, ACTA MATHEMATICA VIETNAMICA, 31(1) (2006) 39-48.
• [5] Kim, Y.H., Yoon, W.D., Classi cation of ruled surfaces in Minkowski 3-space, J. of Geom. and Physics, 49(1) (2004) 89-100.
• [6] Kucuk, A., On the developable timelike trajectory ruled surfaces in Lorentz 3-space R3 1, App. Math. and Comp., 157(2) (2004) 483-489.
• [7] Kucuk, A., On the developable of Bertrand Trajectory Ruled Surface Osets, Intern. Math. Journal, 4(1) (2003) 57-64.
• [8] O'Neill, B., Semi Riemannian Geometry with Applications to Relativity, Academic Press, New York-London, 1983.
• [9]  Onder, M., Ugurlu, H.H., Frenet frames and invariants of timelike ruled surfaces, Ain Shams Eng J. 4(4) (2013) 507-513.
• [10] Ratclie, J.G., Foundations of Hyperbolic Manifolds, Springer, (2006).
• [11] Ravani, B., Ku, T.S., Bertrand Osets of ruled and developable surfaces, Comp. Aided Geom. Design, 23(2) (1991) 147-152.
• [12] Ugurlu, H.H.,  Onder, M., On Frenet Frames and Frenet Invariants of Skew Spacelike Ruled Surfaces, VII. Geometry Symposium, Krehir, Turkey, 07-10 July 2009.
• [13] Ugurlu, H.H., C alskan, A., Darboux Ani Donme Vektorleri ile Spacelike ve Timelike Yuzeyler Geometrisi, Celal Bayar Universitesi Yaynlar, Yayn No: 0006, 2012.
• [14] Yang, A.T., Kirson Y., Both B., On a Kinematics Theory for Ruled Surface, Proceedings of Fourth World Congress on the Theory of Machines and Mechanisms, Newcastle Upon Tyne, England, 737-742, 1975.