M. M. Jamil, N. A. Che Sidik, and M. N. A. W. Muhammad Yazid, “Thermal Performance of Thermosyphon Evacuated Tube Solar Collector using TiO2/Water Nanofluid”, J. Adv. Res. Fluid Mech. Therm. Sc., vol. 20, no. 1, pp. 12–29, Apr. 2016.