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Raviselvan, R. , Ramanathan, K. , Perumal, P. , Thansekhar, M.. "Response Surface Methodology for Optimum Hardness of TiN on Steel Substrate". World Academy of Science, Engineering and Technology, Open Science Index 108, International Journal of Materials and Metallurgical Engineering, (2015), 9(12), 1448 - 1454.