Safaa Abdul Adheem Saleh, Zena Khalefa Kadhim, and Kamil Abdulhusein Khalaf, “An Experimental Study of Heating Heavy Fuel Oil by Hot Air using Helical Fins in a Double-Pipe Heat Exchanger”, J. Adv. Res. Fluid Mech. Therm. Sc., vol. 112, no. 2, pp. 102–115, Dec. 2023.