L. Parajuli, N. K. Jha, L. K. Devkota, S. Parajuli, and S. P. Adhikari, “Experimental Investigation of Thermal Enhancement using CuO-Water Nanofluid in a Tube Equipped with Helical Turbulators”, OODBODHAN, vol. 9, no. 1, pp. 1–13, Jun. 2026.