Arun Ram Prasath, R. T., N. Ranjan, S. Narayan Mahato, N. Kumar Roy, and P. Thomas. “Effect of New and Aged Mineral Oil Based TiO₂ Nanofluid for Power Transformer Application”. Power Research - A Journal of CPRI, Dec. 2017, pp. 555-60, https://node6473.myfcloud.com/~geosocin/CPRI/index.php/pr/article/view/1019.