Y. Singh, A. Sharma, S. P. Dwivedi, V. R.Mishra, and A. Kumar Srivastava, “Influence of Sliding Speed on the Tribological Characteristics of Pongamia Oil with Tio2 Nanoparticles”, IJET, vol. 7, no. 4.39, pp. 155–157, Dec. 2018, doi: 10.14419/ijet.v7i4.39.23830.